the surface area of a sphere if the radius, r, is 6 meters.

43,938 results
  1. Pre-Algebra

    1) Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,256 ft2 b. 4,189 ft2 c. 1,089 ft2 d. 1,568 ft2 2) Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,257 ft3

  2. Math

    1.) find the volume of a sphere with a radius of 6 ft. round your answer to the nearest whole number. A. 151 ft^3 (my) B. 678 ft^3 C. 904 ft^3 D. 2,713 ft^3 2. find the volume of a sphere with a radius of 4 m. Round your answer to the nearest whole number.

  3. Math for Ms. Sue please! Last math questions!

    For numbers 1–3, find the indicated measurement of the figure described. Use 3.14 for pi and round to the nearest tenth. Find the surface area of a sphere with a radius of 8 cm. 267.9 cm^2 803.8 cm^2 2143.6 cm^2 201.0 cm^2 Find the surface area of a

  4. Some algebra please help me!

    1) Find the surface area of a sphere with a radius of 8 cm. A 267.9 cm B 803.8 cm *** C 2143.6 cm D 2010. cm 2) Find the surface area of a sphere with a radius of 4 ft. A 452.2 m B 150.7 m C 113.0 m D 904.3 m *** 3) Find the volume of a sphere with a

  5. Math

    PLEASE HELP!!! 1. A sphere has a radius of 2x+3. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S=4πr^2 for the surface area of a sphere. 2. A carpenter is putting a skylight in a roof. If the roof

  6. Algebra

    A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r2 for the surface area of a sphere.

  7. calculus

    1. The radius of a sphere is r inches at time t seconds. Find the radius when the rates of increase of the surface area and the radius are numerically equal. A 1/4π in B 1/5π in C 1/3π in D 1/8π in E 1/2π in

  8. 2 questions?

    What is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? 50 m2 101 m2 201 m2 *** 268 m2 What is the volume of a sphere with a radius of 4 meters rounded to the nearest square meter? 67 m3 201 m3 268 m3

  9. surface area and volume

    I really need some help, I don't fully understand. Exspecially with fractions, don't know how to enter them on calculator. 1. What is the approximate volume of the sphere? 524 m³ (my choice) 1,000 m³ 1,256 m³ 1,570 m³ 2. What is the approximate surface

  10. Physics !!Check Answers!!

    1. What happens to the gravitational force between two objects if the distance between them triples? A. The force increases by a factor of 3 B. The force decreases by a factor of 9 C. The force increases by a factor of 9 D. The force decreases by a factor

  11. Calculus

    A certain magical substance that is used to make solid magical spheres costs $800 per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for $20 per square foot of surface area. If you are manufacturing

  12. Algebra Question~!

    A sphere has a radius of 3x+2. Which polynomial in standard form best describes the total surface area of the sphere?

  13. Math

    1.Which solid has one base that is a triangle and three lateral surfaces that are triangles? A:triangular pyramid*** B:triangular prism C:rectangular prism D:rectangular pyramid 2:Sara needs to cover the top and the sides of the cylinder below. 8in 12in

  14. Algebra

    Spheres 1) Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. :1,256ft^2*** :4,189ft^2 :1,089ft^2 :1,568ft^2 2) Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. :1,257

  15. MATH ✿╣Check╠✿

    what is the surface area of a sphere with a radius of 5 meters rounded to the nearest square meter? MY ANSWER: 314m^2 (is it correct?)

  16. algebra

    A sphere has a radius of 7𝑥 + 7. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula 𝑆 = 4𝜋𝑟^2 for the surface area of a sphere. a. 196𝜋𝑥^2 − 392𝜋𝑥 + 196𝜋 b. 196𝜋𝑥^2 +

  17. Algebra 1

    Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate the surface area of earth using the formula for the surface area is a sphere, S = 4 pi r squared. Earths surface is about 70 percent water. About how many square meters of earths surface

  18. math --- check my work!

    1.Find the surface area for a sphere with a radius of 10 feet. Round to nearest whole number. 1,256 ft2*** 4,189 ft2 1,089 ft2 1,568 ft2 2.Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. 1,257 ft3 4,187 ft3*** 1,089

  19. calculus

    What is the instantaneous slope of y =8/x at x = -3? What is the average rate of change of y with respect to x over the interval [-3, 4] for the function y = 2x + 2? The surface area, S, of a sphere of radius r feet is S = S(r) = 4πr2. Find the

  20. math

    Show that the surface area of a sphere is two thirds of the total surface area of any cylinder circumscribed around the sphere (the sphere therefore touches both bases of the cylinder as well as its lateral surface).

  21. Math

    What is the lateral surface area of a solid 8 meters high whose base is the figure at right? Dimensions are in meters. (A)5522 m2 (B)820 m2 (C)870 m2 (D) 922.8 m2 The image is a square in the middle that is 12x15 meters, and two half cylinders next to it,

  22. Math

    1) Find the surface area of a sphere with a radius of 8 cm. A 267.9 cm B 803.8 cm C 2143.6 cm D 2010. cm 2) Find the surface area of a sphere with a radius of 4 ft. A 452.2 m B 150.7 m C 113.0 m D 904.3 m 3) Find the volume of a sphere with a radius of 4

  23. math

    The volume V of a sphere of radius r is given by the formula V (r) = (4/3)πr^3. A balloon in the shape of a sphere is being inflated with gas. Assume that the radius of the balloon is increasing at the constant rate of 2 inches per second, and is zero

  24. math

    A solid cone of height 12cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere.

  25. Calculus (Parts A and B done, just help with C)

    The radius, r, of a sphere is increasing at a constant rate of 0.05 meters per second. A. At the time when the radius of the sphere is 12 meters, what is the rate of increase in its volume? B. At the time when the volume of the sphere is 36pi cubic meters,

  26. physics

    Sphere 1 has surface area A1 and volume V1 and sphere 2 has surface area A2 and volume V2. If the radius of sphere 2 is 3.53 times the radius of sphere 1, what is the ratio of the areas A2/A1 ? 1.25×101 & 4.40×101 are correct answers but i dont remember

  27. MAth

    A sphere has a surface area of 28.26 in2. Find the diameter in inches, of the sphere. Use PI Question 2 What is the surface area, in square inches, of a sphere with radius 3.5 in.? Use Pi and round your answer to the nearest hundredth, if necessary.

  28. Mathematics

    1. For the pair of similar solids, find the value of the variable. Cylinder 1: r = 15 cm, h = 6 cm Cylinder 2: r = 5 cm, h = x cm My answer: D) 2 cm 2. For the pair of similar solids, find the value of the variable. Pyramid 1: h = 24 mm, b = x mm Pyramid

  29. Math

    A spherical balloon is being inflated. Given that the volume of a sphere in terms of its radius is V(r) =4/3 πr^3 and the surface area of a sphere in terms of its radius is S(r) = 4 πr^2, estimate the rate at which the volume of the balloons is changing

  30. Mathematics

    A spherical balloon is being inflated. Given that the volume of a sphere in terms of its radius is v(r)=(4/3)(pi(r^3)) and the surface area of a sphere in terms of its radius is s(r)=4pi(r^2), estimate the rate at which the volume of the balloon is

  31. math

    The radius of a moon is 747 miles. use the formula for the radius r of a sphere given it's surface area A, r=√(A/4π) , to find the surface area of the moon. Please help ASAP!!!!! :(

  32. math

    3.A rectangular prism has a width of 92ft and a volume of 240ft.Find the volume of a similar prism with a width of 23ft.Round to the nearest tenth, if necessary. 4.A pyramid a height of 5in. and a surface area of 90in^2.Find the surface area of a similar

  33. Pre-Algebra

    For numbers 1–3, find the indicated measurement of the figure described. Use 3.14 for (pi) and round to the nearest whole number. 1) Find the surface area of a sphere with a radius of 8 cm. a. 268 cm2 b. 804 cm2 c. 2,144 cm2 d. 201 cm2 2) Find the

  34. test corrections for problems 6,11,12 and 23please

    A sports team is building a new stadium on a lot of land. The lot measures 8x by 12x and the field will be 3x by 6x. how much land will be left for the bleachers, restrooms, and other parts of the stadium? So would I use the foil method or would I use the

  35. Pre-Algebra

    1) Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,256 ft2 b. 4,189 ft2 c. 1,089 ft2 d. 1,568 ft2 2) Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,257 ft3

  36. geometry

    what is the surface area of a sphere if the radius, r, is 6 meters

  37. calculus

    The surface area, S, of a sphere of radius r feet is S = S(r) = 4πr2. Find the instantaneous rate of change of the surface area with respect to the radius r at r = 2. (4 points)

  38. Math- Radius

    The volume of a sphere is V = 14,130 ft3. What is its surface area? What is it's radius? The volume of a sphere is V = 4443 m3. What is its surface area? What is it's radius?

  39. Math--2question

    13. What is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? (1 point)50 m2 101 m2 201 m2 268 m2 14. What is the volume of a sphere with a radius of 4 meters rounded to the nearest square meter? (1 point)67 m3 201

  40. 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

  41. physics 12

    A hollow sphere us charged to 14uc .Find the potential(a) at its surface (b) inside the sphere (c) at a distance of 0.2m from the surface.The radius of sphere is 0.3 m

  42. Calculus Homework

    You are blowing air into a spherical balloon at a rate of 7 cubic inches per second. The goal of this problem is to answer the following question: What is the rate of change of the surface area of the balloon at time t= 1 second, given that the balloon has

  43. mathematics

    What is the solution for this? The surface area of a sphere varies in direct proportion to the square of its radius. If a sphere of radius 6cm has a surface area of 452 square cm, find, to the nearest mm, the radius of a spherewith the surface area 1000

  44. algebra--1 question

    A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r^2 for the surface area of a sphere. 16(pi)x^2 + 16(pi) 16(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 48(pi)x +

  45. Measurement

    A cone has a radious of 24 cm and a volume of 1,920 cm ^3. what is the volume of a similar cone with a radius of 18 cm? What Is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? What is the volume of a sphere with

  46. Math

    Hi I am putting the questions that don't have pictures with the problem from my Measurement Unit Test I need my answers checked because as of now I have a D in math and I want to raise it so I need to make sure my answers are correct! 1. Which solid has 2

  47. calculus

    The radius of circular disk is 18cm with a maximum error of 0.2cm. Estimate the maximum error in calculated area of the disk. b) The circumference of a sphere was measured to be 64cm with a maximum error of 0.5. Estimate the maximum error in the calculated

  48. Help Damon Ms.Sue

    1.Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. 1,256 ft2 4,189 ft2 1,089 ft2 1,568 ft2 2.Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. 1,257 ft3 4,187 ft3 1,089

  49. mathematics

    Show that the surface area of a sphere is two-thirds of the total surface area of any cylinder circumscribed around the sphere (the sphere, therefore, touches both bases of the cylinder as well as its lateral surface).

  50. calculus

    Determine the rate at which the surface area is changing with respect to time at t=2 min, assuming that r = 3 at t = 0 Assume that the radius r of a sphere is expanding at a rate of 14 in / min. Its surface area is 4(pi)r^2 Ds/dt= 4pi2rdr/dt i got

  51. PHYSICS

    A 494 kg uniform solid sphere has a radius of 0.390 m. Find the magnitude of the gravitational force exerted by the sphere on a 49.1 g particle located (a) 1.45 m from the center of the sphere 1 ? N (b) at the surface of the sphere 2 ? N (c) 0.200 m from

  52. math

    direct variation the surface area of a sphere varies directly as the square of the radius. if the surface area of a sphere is 36 pi meters squared when the radius is 3 meters, what is the surface area of a sphere with a radius of 6 meters? S=k*r^2 solve

  53. Geometry/Algebra/Calculus

    Why isn't the surface area of a sphere with radius r the following: 2*pi * (pi*r) That comes from the following flow of logic: Doesn't it makes sense to think of the surface area of the sphere with radius r as the the circumference of the semi-circle with

  54. math

    The volume enclosed by a sphere of radius r is (4/3)πr^3. The surface area of the same sphere is 4πr^2. You may already have noticed that the volume is exactly (1/3)r times the surface area. Explain why this relationship should be expected. One way is to

  55. Math Advanced Functions

    A spherical balloon is being inflated. Given that the volume of a sphere in terms of its radius is V(r)= 4/3 πr^3 and the surface area of a sphere in terms of its radius is S(r)= 4πr^2, estimate the rate at which the volume of the balloon is changing

  56. Pre-Calculus

    The surface ares S (in square meters) of a hot air ballon is given by s(r)=4 pi r^2 where r is radius of balloon (in meters). If the radius r is increasing with time (in seconds) according to the formula r(t) = 2/3t^3, t is greater than or equal to 0, find

  57. Algebra

    the surface area of a sphere is a=4 pie r squared where r is the radius of the sphere. waht is the radius, rounded to the nearest tenth, of a ball with surface area equal to 85 square inches? below the question is A. 2.6 in. B 6.8 in. C. 2.7 in. D 6.7 in.

  58. Physics-Gauss' Law

    1. If a surface is a 10 meter by 10 meter plane lying in the y-z plane, what is the vector representing the area of the plane? 2. If a sphere of radius 2 meters is placed in a uniform electric field of 3 N/C, what is the net flux through the sphere? 3.

  59. Math

    The surface area of a sphere is given by the formula 4pi r2, where is it's radius. Although the shape of earth is noth exactly spherical, it has an average radius of 3960 miles. Estimate the surface area of earth.

  60. Math

    The surface area and the volume of a sphere are both 3 digit integers times π. If r is the radius of the sphere, how many integral values can be found for r?

  61. Algebra

    Hi, I was just wondering if someone could check my answers! 1. Find the surface area of a sphere with a radius of 8 cm. A.267.9 cm B.803.8 cm** C.2143.6 cm D201.0 cm 2. Find he surface area of a sphere with a diameter of 12 m. A. 452.2 m** B.150.7 m

  62. Math

    If a sphere has radius 5 m. what is the surface area of the sphere?

  63. college physics

    Two solid spheres A and B are made from the same material. The mass of sphere B is eight times that of sphere A. If the radius of sphere A is 7.50 cm, what is the radius of sphere B? [Volume of a sphere of radius r is given by V = 4ðr63/3]

  64. physics

    Two solid spheres A and B are made from the same material. The mass of sphere B is eight times that of sphere A. If the radius of sphere A is 7.50 cm, what is the radius of sphere B? [Volume of a sphere of radius r is given by V = 4ðr63/3]

  65. PHYSICS

    The surface area A of a sphere of radius R is given by the equation A = 4pi*R2, where pi equals 3.1416 (to 5 digits). Calculate the area of a sphere which has a radius of 2 m. If 2600 grains of sand are uniformly spread out on the surface of the sphere,

  66. calculus *improper integrals*

    A hole of a radius of 1cm is pierced in a sphere of a 4cm radius. Calculate the volume of the remaining sphere. I know that the volume of a sphere with an exterior radius is of: V = pie(R^2 - r^2) dH where R^2 is the exterior surface area and r^2 is the

  67. Algebra II

    12. A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4 r2 for the surface area of a sphere. (1 point) 64 x2 + 32 x + 4 64 x2 + 16 x + 4 *my answer 4 x2 + 32 x + 64 4

  68. calculus

    A hole of a radius of 1cm is pierced in a sphere of a 4cm radius. Calculate the volume of the remaining sphere. I know that the volume of a sphere with an exterior radius is of: V = pie(R^2 - r^2) dH where R^2 is the exterior surface area and r^2 is the

  69. geometry

    the surface area of a sphere if the radius, r, is 6 meters.

  70. Geometry

    find the radius of a sphere withh the given property. A.The number of square meters of a surface area equals the number of cubic meters of volume. B. The ratio of surface area in square meters to volume in cubic meters is 1:5.

  71. math

    A solid cone of height 12cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere. cone V= 1/3 pi r^2 h sphere V= 4/3 pi r^3 area of sphere = 4r^2 how to find sphere of radius?

  72. Calculus

    I don't quite understand how to go about solving these so if you could explain them It would be much appreciated! ^o^ 1. The radius, r, of a sphere is increasing at a constant rate of 0.05 meters per second. A. At the time when the radius of the sphere is

  73. math 7 grd

    you have to design a space station (model) that has a 120 cm3 volume, and it has to have the possible smallest surface area. it must contain 3 different shapes. (cone and sphere surface are was not covered, only their volume, so they are out....we can

  74. 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

  75. maths

    A hallow sphere has a volume of xcm^3 and a surface area of ycm^2 if the value of the diameter of the sphere is the radius of the area of a semicircle.what is the radius of a cylinder(P) if the area of the circle is equal to the area of the cylinder when

  76. calc: relative error

    The circumference of a sphere was measured to be 77 cm with a possible error of .8 cm. Use differentials to estimate the maximum error in the calculated surface area. Estimate the relative error in the calculated surface area. please help me..thank you!

  77. Physics

    Sphere 1 has surface area A1 and volume V1, and sphere 2 has surface area A2 and volume V2. If the radius of sphere 2 is 3.5 times the radius of sphere 1, what is the ratio of each of the following?

  78. maths

    K, Q1.A sphere of radius 5cm is lowered into a rectangular tank 50cm long and 20cm wide containing water to a depth of 10cm.The sphere floats with half of its surface above the level of the surface of the water Calculate (a)the volume of the sphere, (b)the

  79. Geometry

    #1: A ball has a radius of 1 foot. What is the surface area of the ball? A. 2 pi ft^2 B. 4 pi ft^2 C. 6 pi ft^2 D. 8 pi ft^2 #2: What is the approximate surface area of the sphere if the sphere has a measurement of 27 cm? A. 247,000 cm^2 B. 9,160 cm^2 C.

  80. Math

    The radius of a sphere is 3 cm . the radius is increased by a linear scale factor of 5:2 . calculate the surface area of the new sphere

  81. Math

    Hi I am putting the questions that don't have pictures with the problem from my Measurement Unit Test I need my answers checked because as of now I have a c in math and I want to raise it so I need to make sure my answers are correct! 1. Which solid has 2

  82. Calculus I

    The volume of a sphere is changing at a rate of 8pi cm/sec. What is the rate of change of its surface area when the radius is 1? (the volume of a sphere is given by V=4/3pir^3 and its surface area, by A=4pi r ^2).

  83. math

    A sphere circumscribe a cube of side 4 cm. Find the radius and surface area of the sphere

  84. geometry

    The radius R of a sphere is 5.6cm. Calculate the sphere's surface area A. Use the value 3.14, and round your answer to the nearest tenth.

  85. math

    The earth has a radius of 6,380 km. The formula for the volume of a sphere is �� V = 4/3 ðx^3, and the formula for surface area of a sphere is A = 4ðx^2 . Find the volume and surface area of the earth and write the answer in scientific

  86. math

    The surface area and the volume of a sphere are both 3 digit integers times π. If r is the radius of the sphere, how many integral values can be found for r?

  87. math

    The surface area of a sphere is 93.4m square. What's the radius of the sphere?

  88. Pre- Algebra

    1) Find the surface area for a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,256 ft2 b. 4,189 ft2 c. 1,089 ft2 d. 1,568 ft2 2) Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number. a. 1,257 ft3

  89. Math

    What is the lateral surface area of a solid 8 meters high whose base is the figure at right? Dimensions are in meters. (A)5522 m2 (B)820 m2 (C)870 m2 (D) 922.8 m2 The image is a square in the middle that is 12x15 meters, and two half cylinders next to it,

  90. physics

    A sphere has a radius of 0.20 meters and has a uniform surface charge density equal to 6.3 micro coulombs per meter squared. A second point charge has a magnitude of 0.58 micro coulombs and is 0.61 meters away from the center of the sphere. Find the

  91. Math

    If a sphere has radius 5 m. what is the surface area of the sphere?

  92. Math

    A spherical balloon expands uniformly as it is inflated. The radius of the balloon in r meters at time t seconds. Find the radius, the volume, and the surface area of the balloon when the rates of increase of the surface area of the balloon and the radius

  93. basic calculus

    The area of the surface of a sphere of radius r is 4πr^2. If the estimate radius of a spherical balloon is 200 meter and this estimate is too small by 1/2 meter. Find the approximate surface area in sq. m.

  94. physics electricity & magnetism

    Charge Q=4 micro-coulombs is distributed uniformly over the volume of an insulating sphere of radius R=.05 meters. What is the potential difference between the center of the sphere and the surface of the sphere? How do I approach this problem? I tried

  95. algebra

    use 1.9 as the radius for the sphere and answer the following 1-volume = 2-surface area= 3-ratio of the volume to surface area= remember everything is with the sphere and radius 1.9 you have to use them to answer the volume, surface area, ratio of the

  96. Calculus

    A certain magical substance that is used to make solid magical spheres costs per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for per square foot of surface area. If you are manufacturing such a

  97. Calculus

    if the surface area of a sphere is given by the formula SA=4pir^2, find the rate of increase of the surface area if the radius is 4 cm and is increasing at the rate of 0.5 cm/min.

  98. Math/Physics

    The potential at the surface of a sphere (radius R) is given by V_0 = k cos 3theta where k is constant. Find the potential inside and outside the sphere as well as the surface charge density (lower case sigma(theta)) on the sphere. (assume there is no

  99. college physics

    Two solid spheres A and B are made from the same material. The mass of sphere B is eight times that of sphere A. If the radius of sphere A is 7.50 cm, what is the radius of sphere B? [Volume of a sphere of radius r is given by V = 4ðr63/3]

  100. Physics (E&M)

    1/2Eo times ( (volume integral)E^2 dtau + (surface integral)E PHI da ) That's the equation, the first integral is over the voume of a surface charged (q) sphere of radius a > R (radius of sphere) so a Gaussian surface beyond the sphere and the second is

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