if the radius of a cone is multiplied by 8,how many times larger ids the new volume?

29,684 questions
1. geometry

if the radius of a cone is multiplied by 8,how many times larger ids the new volume?

asked by Anonymous on May 19, 2011
2. Calculus

Given a right circular cone, you put an upside-down cone inside it so that its vertex is at the center of the base of the larger cone, and its base is parallel to the base of the larger cone. If you choose the upside-down cone to have the largest possible

asked by Mishaka on December 16, 2011
3. Calculus: Optimization

I have no idea how to approach this problem, if someone knows just how to relate h, r with H,R, that would be extremely helpful and I can workout the rest! Thank you in advance. Given a right circular cone, you put an upside-down cone inside it so that its

asked by Jazz on February 17, 2015
4. math

Two right circular cone, one upside down in the other. The two bases are parallel. The vertex of the smaller cone lies at the center of the larger cone’s base. The larger cone’s height and base radius are 12 and 16 ft, respectively. What are the

asked by rolan on August 13, 2012
5. math

I want to know how to calculate the radius, Im very confused. The cones below are similar, although not drawn to scale (smaller cone) (larger cone) height is 12 ft height is 15 ft radius is 8 ft radius not given What is the lenght of the radius of the

asked by Emilly on February 20, 2019
6. Pre-Algebra

The cones below are similar, although not drawn to scale. What is the length of the radius of the larger cone? The height of the smaller cone is 18 and the radius is 6. The height of the larger cone is 27 and the radius is unknown. A- 4 B- 6 C- 9 D- 12

asked by GymnasticsLover05 on February 2, 2019
7. Math

A small cone has a vertex touching the base of a large cone. The base of the small cone is parallel to the base of the larger cone. a.) Find h and r so that the smaller cone has a maximum volume. b.) State the maximum volume c.) explain how you know

asked by Kate on April 20, 2019
8. Math

What is the length of the radius of the larger cone? The cones are similar. the smaller cone has a radius of 5 and is 15ft. The larger one is only 18ft 5 6 My answer 7 8

asked by Enna on March 10, 2019
9. 7th g-math

An ice-cream shop offers a small size cone and a large size cone. The height of the large cone is 2 times the height of the small cone. The radius of the large cone is 2 times the radius of the small cone. Which statement is true about the volumes of the

asked by Cassidy on February 25, 2013
10. Math

the formula for the volume of a cone is v=1/3pir^2h. The volume cone x is 2 times the volume of cone Y. Why the height of cone X is 2 times the heigh of the cone Y, and the radius of cone X is the same as the radius of cone Y.

asked by Depti on January 6, 2015

The cones are similar: Small Cone: Radius: 5 Length: 15 Large Cone: Radius: ? Length: 18 What is the radius of the larger Cone? Would it be 8?

asked by Batmen on January 26, 2017
12. calculus

Given a right circular cone, you put an upside-down cone inside it so that its vertex is at the center of the base of the larger cone, and its base is parallel to the base of the larger cone. If you choose the upside-down cone to have the largest possible

asked by Mari on January 21, 2012
13. Math (help)

what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help.

asked by luna on April 8, 2014
14. geometry: volume of cone

If the radius of a cone is cut in half, the volume of the cone is multiplied by what number?

asked by Anonymous on May 9, 2011
15. geometry

11. Infinitely many different sectors can be cut from a circular piece of paper with a 12-cm radius, and any such sector can be fashioned into a paper cone with a 12-cm slant height. (a) Show that the volume of the cone produced by the 180-degree sector is

asked by Sarah on April 15, 2010
16. Geometry

Infinitely many different sectors can be cut from a circular piece of paper with a 12-cm radius, and any such sector can be fashioned into a paper cone with a 12-cm slant height. (a) Show that the volume of the cone produced by the 180-degree sector is

asked by Sarah on April 17, 2010
17. Math

1. What is the length of the radius of the larger cone? The slant height of cone A is 12 and the radius is 8 The slant height of cone B is 15, I am trying to figure out the radius of this one... How do I do it? A:10 B:11 C:12 D:13 2. What is the length of

asked by Reeces on March 6, 2017
18. Calculus

A cone is inscribed in a sphere of radius a, centred at the origin. The height of the cone is x and the radius of the base of the cone is r, as shown in the diagram opposite. Find the height, x, for which the volume of the cone is a maximum. (HINT: show

asked by Grant on May 6, 2013
19. physics

A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this

asked by Christina on November 12, 2010
20. geometry

You have looked at it two times before. There are 30 questions worth 30 points. Part 1 Multiple Choice: Select the best answer from the choices provided. (Each question is worth one point) 1. Determine how many wheels are turning clockwise. 1 2 none 2.

asked by joe on June 23, 2009
21. Algebra

1 supersized cone for \$8 or 4 regular-sized cones for \$5. The large cone is has a radius of 5 inches and a height of 12 inches. Each of the 4 smaller cones have a radius of 2.5 inches and a height of 6 inches. Which holds more ice cream? the 1 big cone? or

asked by Anonymous on April 1, 2018
22. calculus

At the instant when the radius of a cone is 3 inches, the volume of the cone is increasing at the rate of 28.27433388 cubic inches per minute. If the height is always 3 times the radius, find the rate of change of the radius at that instant?

asked by joseph on December 30, 2010

At the instant when the radius of a cone is 3 inches, the volume of the cone is increasing at the rate of 9 pi or 28.27433388 cubic inches per minute. If the height is always 3 times the radius, find the rate of change of the radius at that instant?

asked by philip on December 30, 2010
24. geometry

A cone has a volume of 36pi cubic meters. Its height is four times its radius. Find the surface area of the cone.

asked by Piggy on March 2, 2012
25. geometry

The diameter of two similar cones are in the ration 5 to 6. If the volume of the smaller cone is 125 PI cubic centimeters and the diameter of the larger cone is 12 centimeters, what is the height of the larger cone?

asked by Annis on May 4, 2015
26. AP calculus AB

At the instant when the radius of a cone is 3 inches, the volume of the cone is increasing at the rate of 9 pi cubic inches per minute. If the height is always 3 times the radius, find the rate of change of the radius at that instant.

asked by jennifer on December 29, 2010
27. MATH

A sphere has five times the volume of a right cone that has a radius of 4.6 cm and a height of 7.7 cm. Determine the radius of the sphere to the tenth of a centimetre. This question is multiple choice and these were the options: A. 2.2cm B. 3.4cm C. 5.9cm

asked by Anonymous on October 5, 2010
28. Geometry 10th

A cone is inscribed in a sphere with a radius of 5 centimeters.The distance from the center of the sphere to the center of the base of the cone is x. Write an expression for the volume of the cone in terms of x (Hint: Use the radius of the sphere as part

asked by CP on April 17, 2012
29. Pure Maths

Two cones are similar in shape and the ratio of corresponding lengths is 3:5. (a) if the radius of the smaller cone is 12cm, find the radius of the larger cone. (b) if there is sufficient paint to paint 216 large cones, how many smaller cones can be

asked by Trissy on October 16, 2011
30. Mathematics

solid is in the form of a cone mounted on himispher in such away that the Venter of the base of the cone fast coincide with the center of the base of the hemisphere.the radius of hemisphere and height of cone are r each ,radius of base of cone is 1/2r and

asked by Okram gojen on March 3, 2019
31. Math

An inverted right cone, half filled with water. I've only the volume of the entire cone to go from. So the volume of the cone = 1/3 the base area * height I've been told by a friend that the base area of a half scale cone = 1/4 of the larger cones base

asked by Eef on July 15, 2014
32. math grade 8/ unit test lesson 13/unit 2

#12 the cones below are similar,although not drawn to scale.what is the radius of the larger cone. a)10 b)11 c)12 d)13 i think it is c

asked by chelsea on March 9, 2017
33. Math

A sphere is inscribed in a right cone. The slant height of the cone = the diameter of the base of cone. If the radius of the sphere is r, find the volume of the cone in terms of r.

asked by Maya on March 22, 2012
34. math

A right circular cone stands on a hemisphere. The base radius of the cone is equal to the radius of the hemisphere. If the base radius of the cone is 10 centimeters and its height is 15 centimeters,calculate the total volume of the solid.

asked by Dennis on January 6, 2016
35. Maths

A sector of a circle of radius 7cm subtending an angle of 270 degree at centre of the circle is use to form a cone? (A)find the base radius of the cone. (B)calculate the area of the base of the cone.

asked by Victor on February 2, 2016
36. Math

A cone is formed from a sector of a circular of radius 9cm which sustained an angel 120 find (a) the radius of the cone formed (b) the curved surface area of the cone (c) the total surface (d) volume

asked by Olawale olaniyi on February 8, 2017
37. Math

Find the radius of a right circular cone if its volume is 1.5 times its lateral area and its radius is half its slant height.

asked by Allison on April 30, 2013
38. Math

(a) A sphere of radius 4 in is inscribed in a cone with radius 6 in. How tall is the cone? (b) A cone with radius 4 in is inscribed in a sphere of radius 6 in. How tall is the cone? Show that there is more than one answer to this question.

asked by John on August 19, 2010
39. Calculus

A right circular cone is inscribed in a sphere of radius r. Find the dimensions of the cone that maximize the volume of the cone.

asked by DJ on October 16, 2011
40. Calculus

A right circular cone is inscribed in a sphere of radius r. Find the dimensions of the cone that maximize the volume of the cone.

asked by Shayna on October 16, 2011
41. geometry

Two cones are similar. The larger cone, R, has a volume of 1331 cubic feet and the smaller cone, S, has a volume of 64 cubic feet. Find the scale factor of Cone R to Cone S.

asked by jack on May 10, 2012
42. maths

Two spheres of radius 6 cm and 4cm are inscribed in a right circular cone.The bigger sphere touches the smaller one and also the base of cone .find the height of the cone?

43. phys hmwk help

A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this

asked by Jarod on November 14, 2010
44. Calculus

Suppose that sand is collecting in the shape of a cone in such a way that the base radius of the cone is always one-third of its height. If 3cm^3/min is the rate at which the sand is being added to the cone, how fast is the height of the cone changing when

asked by Delano on February 7, 2019
45. Maths

A right circular cone is circumscribed about a sphere of radius a .If h is the distance from the centre of the sphere to the vertex of the cone. Show that the volume of the cone is 1/3pi a^2(a+h)^2/(h-a). Find the angle of a cone when the volume is minimum

asked by Joel on August 9, 2016
46. maths-surface area

A solid is in the form of cone mounted on a hemisphere in such a way that the centre of the base of the cone just coincide with the centre of the base of the hemisphere. Slant height of the cone is L and radius of the base of the cone is 1/2r where through

asked by anoynomous on March 17, 2013
47. Math

The height of the solid cone above is 18 inches and the radius of the base is 8 inches. A cut parallel to the circular bas is made completely through the con so that one of the two results is smaller cone. If the radius of the base of the small cone is 2

asked by Mayyyy on October 12, 2017
48. maths

csa of a cone is twice the other cone if the slant height of the other cone is twice of first one then the ratio of their radius is

asked by manpreet on January 6, 2013
49. maths

A metallic sphere of radius r is melted and converted in to a cone with height r . Then the radius of the base of the cone is ----

asked by sanjay on December 21, 2015
50. Geometry

"A cone has the radius of 24 and its volume is 1,920 what is the volume of a similar cone with the radius of 18 Answers A.480 B.810 C.1,080 D.1,440" How do I find the height for the similar cone to get its volume?

asked by Kaitlyn on March 10, 2015
51. Math

Please Help A body consists of a solid hemisphere of radius r joined to a right circular cone of base radius r and perpendicular height h. The plane surfaces of the cone and hemisphere coincide and both solids are made of the same material. Show that the

asked by Joe on July 24, 2016
52. geometry math

There is an upside-down cone that is 12m high and has a circular base with a radius of 4m that is being filled with liquid. Make V, the volume, a function of the height of the liquid, h. What is the volume of the cone when the water is 5m deep? V =

asked by CrazyFeet on July 8, 2007
53. Maths

A cone shaped candle whose height is 3 times its radius is melting at the constant rate of 1.4 cm^3 s^-1. If the proportion of radius to height is preserved, find the rate at which the radius will be decreasing when it is 3.7cm. Answer: -0.01

asked by Harry on April 30, 2019
54. math

The diameter and the slant height of a cone are both 24 cm. Find the radius of the largest sphere that can be placed inside the cone. (The sphere is therefore tangent to the base of the cone.) The sphere occupies a certain percentage of the cone’s

asked by Riley on February 13, 2017
55. Math

Two cones are similar Cone 1 r=5 h=15 Cone 2 r=? h=18 What is the length of the radius of cone 2? is it 7?

asked by Josh on March 1, 2018
56. math

a cone has a height of 6.if the volume of the cone is 24xpi, what is the radius of the cone?

asked by jalen on April 5, 2016
57. math

A cone-shaped glass and a tin can are filled with water. The height of the cone is 12" (12 inches) and it has a radius of 1.5" (1½ inches). The can is 2 inches high and has a diameter of 4 inches. Which container holds more water? How much more water does

asked by Kate on June 13, 2016
58. Algebra/Geometry

I am eating a snow cone in a paper cone with a height of 21cm and the radius of my snow cone ice is 3.25 cm. Find the amount of material needed to make my paper snow cone

asked by Angelita Marie on April 11, 2008
59. Geometry

One right circular cone is set inside a larger circular cone. The cones share the same Axis, the same vertex, and the same height. Find the volume of the space between the cones of the diameter of the inside cone is 6in., the diameter of the outside cone

asked by danielle on May 6, 2013
60. Maths

A right circular cone of base radius 5 cm and depth 20 cm is held with its vertex downwards. If water is leaking through a small hole in the vertex at the rate of 8 cm^3/s, find the rate of change of the water level in the cone when the radius of the water

asked by Mary on January 7, 2017

Assume a circular orbit. If a planet's distance from it star is multiplied by 25 times, then by how many times is its orbital period T multiplied ?

asked by Jose on March 4, 2013
62. math

the sum of two irrational numbers multiplied by the larger one is 70 and their difference is multiplied by the smaller one is 12

asked by Nithin on September 2, 2014
63. PreCalculus

Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an arc of length x. Join the two radial edges of the remaining portion of the paper to form a cone with radius r and height h, as shown in

asked by Emma on January 1, 2011
64. Math

Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an arc of length x. Join the two radial edges of the remaining portion of the paper to form a cone with radius r and height h, as shown in

asked by Taylor on January 2, 2011
65. math

The base radius of a cone is 6 inches, and the cone is 8 inches tall. To the nearest square inch, what is the area of the lateral surface of the cone?

asked by Ghanny on April 12, 2010
66. math

The base radius of a cone is 6 inches, and the cone is 8 inches tall. To the nearest square inch, what is the area of the lateral surface of the cone?

asked by Ghanny on April 12, 2010
67. math geometry

a cone has a radius of 2 inches and a height of 12 inches if the radius of the cone is double what must be the new height in the cone in order to keep the volume constant

asked by SHASHA on February 24, 2013
68. Calculus AB

The volume V or a cone (V = 1/3 π r² h) is increasing at a rate of 28π cubic units per second. At the instant when the radius r of the cone is 3 units, its volume is 12π cubic units and the radius is increasing at 0.5 unit per second. a) At the instant

asked by Rahul on December 11, 2010
69. math

the radius r of a right circular cone is increasing at a rate of 2cm/min.the height h of the cone is related to the radius by h=3r.find the rate of change of the volume when r=6cm

asked by ruth on February 22, 2016
70. Algebra

A cone has a radius of 15 cm and a volume of 540 cm3. Find the volume of a similar cone with a radius of 10 cm. A. 54 cm^3 B. 240 cm^3 C. 16 cm^3 D. 360 cm^3 I think its D but by the process of elimination...don't know how to figure it out really...?

asked by Cassie on February 17, 2013

A cone has a slant height of 10 centimeters and lateral area of 60pi square centimeters. What is the volume of the sphere with a radius equal to that of a cone? -we tried solving and got 4.37 or so for the radius and we couldn't get any further than that

asked by Gina on April 19, 2011
72. math

A cone has a slant height of 10 centimeters and lateral area of 60pi square centimeters. What is the volume of the sphere with a radius equal to that of a cone? -we tried solving and got 4.37 or so for the radius and we couldn't get any further than that

asked by Gina on April 19, 2011
73. Algebra

Which solid has one base that is a rectangle and four lateral surfaces that are triangles? A. triangular pyramid *** B. cone C. rectangular prism D. rectangular pyramid A solid with two parallel and congruent bases cannot be which of the following? A. cone

asked by AJo on March 22, 2018
74. Math

Hello I was wondering if you can help me with a question, I cant seem to figure it out. Q: A cone has a radius of 24 cm and a volume of 1,920 cm. What is the volume of a similar cone with a radius of 18 cm? A: 480 cm B: 810 cm C: 1,080 cm D: 1,440 cm

asked by Sebby-Chan on April 18, 2014
75. Cranborne

In the diagram AOBP is the major sector of a circle centre O.BO=8cm, AOB=156° and the sector is bent to form a right cone. a)Caculate the radius of the cone b)Calculate the vertical angle of the cone

asked by Kudakwashe on October 14, 2015
76. geometry

A cone is topped with a hemisphere. Calculate the total surface area if the radius of the cone and hemisphere is 10 cm and the height of the cone is 24 cm.

asked by JOY on May 12, 2011
77. Math

1. A cone has a radius of 40 cm and a volume of 1875 cm^3. what is the volume of a similar cone with a radius of 16 cm. A: 120 cm^3 B: 300 cm^3 C: 75 cm^3 D: 750^3 I know the answer is A but could someone explain how to do the problem.

asked by Embershy on December 14, 2016
78. Math

A cone is constructed by cutting a sector from a circular sheet of metal with radius 20cm. The cut sheet is then folded up and welded. Find the radius and height of the cone with the maximum volume that can be formed in this way.

asked by Lee Meyer on November 10, 2012
79. Math

Sue bought an ice cream cone from Dairy Queen. The cone had a radius of 3cm and a height of 8cm. If I use the formula of (TT=3.14, r=radius, h=height) 2 V=1/3TTr h Is the answer 50.24 cm3? Any help is appreciated. If I'm not right could you tell/show me

asked by Kyle on October 27, 2014
80. geometry

The surface area of a cone is 38 in^2. The radius of a similar cone is triple the radiusof the orginal cone. What is the surface area of the new cone?

asked by Piggy on May 5, 2012
81. math

The volume of a cone is given by the formula V = (1/3)r2h. A cone has a volume of 11,907 cm3 and a radius of 21 cm. what would be the height of the cone.

asked by cheyenne on November 30, 2011
82. maths

a solid sphere of radius r is melted and cast into the shape of a solid cone of height r, then the radius of the base of cone is

asked by faizel on January 2, 2013
83. Math

Completely bemused, do not know how to get the answer. a)8π b)7√2 c)27√π d)7√×7√×1 13- Determine the exact total surface area of a sphere with radius 2√2 metres. a) An inverted cone with side length 4 metres is placed on top of the sphere so

asked by Ricky on February 25, 2016
84. math

The formula for the lateral surface area of a cone is A=πr√(h^2+r^2). (A)Solve for r and simplify the result, if possible. (B) If the lateral surface area of a cone is 10 square feet and the height is 16 inches, what is the radius of the cone in inches?

asked by Andrea on April 24, 2018
85. geometry

The volume of a cone is 54 pi cubic inches. The radius and height of the cone are both reduced by a factor of 3 to create a new cone. What is the volume of the new cone? Is the volume of the new cone 18pi cu in A. 2 pi cu inches B. 6 pi cu inches C. 9 pi

asked by Mary on May 25, 2011
86. Algebra

The volume of a cone is 54 pi cubic inches. The radius and height of the cone are both reduced by a factor of 3 to create a new cone. What is the volume of the new cone? Is the volume of the new cone 18pi cu in A. 2 pi cu inches B. 6 pi cu inches C. 9 pi

asked by Mary - Help plz on May 25, 2011
87. Geometry

A cone has diameter 12 and height 9. A cylinder is placed inside the cone so the base of the cylinder is concentric with the base of the cone and the upper base of the cylinder is contained in the surface of the cone. If the volume of the cone is nine

asked by Henry on May 9, 2017
88. Geometry

A cone has diameter 12 and height 9. A cylinder is placed inside the cone so the base of the cylinder is concentric with the base of the cone and the upper base of the cylinder is contained in the surface of the cone. If the volume of the cone is nine

89. geometry

A cylinder has a height of 16 cm and a radius of 5 cm. A cone has a height of 12 cm and a radius of 4 cm. If the cone is placed inside the cylinder as shown, what is the volume of the air space surrounding the cone inside the cylinder? (Use 3.14 as an

asked by jason on January 23, 2014
90. geometry

A cylinder has a height of 16 cm and a radius of 5 cm. A cone has a height of 12 cm and a radius of 4 cm. If the cone is placed inside the cylinder as shown, what is the volume of the air space surrounding the cone inside the cylinder? (Use 3.14 as an

asked by Mary on March 2, 2015
91. Math

I already posted this, but wanted to say that I have the answers and it is 1.68 is less than or equal to x is less than or equal to 9.10 Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an

asked by Taylor on January 3, 2011
92. math

Resolved QuestionShow me another » AP Calculus related rates problem? The volume V or a cone (V = 1/3 ð r² h) is increasing at a rate of 28ð cubic units per second. At the instant when the radius r of the cone is 3 units, its volume is 12ð cubic units

asked by kelli on December 19, 2009
93. math

A cone has the radius of 15 cm and a volume of 540 cm^3. What is the volume of a similar cone with a radius of 12 cm? A. 54 cm^3 B. 240 cm^3 C. 160 cm^3 D. 360 cm^3

asked by Awesomness on January 7, 2016
94. math

A right circular cone is inscribed inside a sphere. The right circular cone has the radius of the base of 4 inches and the height is greater than 2 inches. The sphere has a radius of 5 inches. What is the ratio of the volume of the cone to the volume of

asked by Jessica on March 6, 2011
95. maths

Im confused can any1 help me on this question ?? or try and put me on the right track? (a) A circle has radius 2cm (in that circle there is an triangle AOB) and the chord AB has length 3cm. AO is 2cm and BO is 2cm. O is the centre of the circle. (b)

asked by hi on September 25, 2007
96. Math

A right pyramid has a surface area of 258 cm2. A right cone has a base radius of 4 cm. The cone and pyramid have equal surface areas. What is the height of the cone to the nearest tenth of a centimetre?

asked by Whitney on October 13, 2014
97. geometry

by what factor must the radius of a circle be multiplied to make the area of the cicle 3 times as large?

asked by Anonymous on March 5, 2012
98. Mathematics

solid is in the form of a cone mounted on himispher in such away that the Venter of the base of the cone fast coincide with the center of the base of the hemisphere.the radius of hemisphere and height of cone are

asked by Okram gojen on March 3, 2019
99. math

The volume of a cone varies jointly as the square of its radius and its height. If the volume of a cone is 2 pi cubic inches when the radius is 1 inch and the height is 6 inches, find the volume of a cone when the radius is 5 inches and the height is 3

asked by Andrea on October 6, 2018