Monday

August 31, 2015
**geometry **

Find the SURFACE AREA of a sphere that has a diameter of 18 centimeters. Leave your answer in terms of pi.
*Sunday, May 26, 2013 by Hannah*

**Geometry**

using the 8 steps in Sec 4.3 of your book, analyze the graph of the following function. R(x)= x^2+x-30/ x^2-x-20
*Saturday, May 25, 2013 by Barby*

**How to get quick responses to your math questions**

Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
*Saturday, May 25, 2013 by MathMate*

**geometry **

Assume that lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x. Figures are not drawn to scale. m<P=14
*Friday, May 24, 2013 by zack*

**Geometry**

What is the measure of m<JIH ? FE = 7.5 cm IJ = 7.5 cm m < FGE = 28 degrees A. 124° B. 56° C. 28° D. 62°
*Friday, May 24, 2013 by Nina *

**Geometry**

What is the area semi-circle piece of glass for Norman glass when the width is 3ft. and the length is 4ft? Radius is not known.
*Friday, May 24, 2013 by Yvonne*

**Math (geometry)**

How do I find the radius of a regular nonagon with an apothem of length 6.42in.
*Thursday, May 23, 2013 by Jerico*

**Engineering**

The bar in the figure has constant cross sectional area A. The top third of the bar, of length L, is made of a material with mass density ρ and Young's modulus E. The bottom two thirds of the bar (length 2L) is made of a different material, with density ρ/2 and ...
*Thursday, May 23, 2013 by MAN*

**geometry**

A rectangular prism has a volume of 250 cubic cm.What would the volume be if one dimension stayed the same, a second dimension was three times as long, and the third was twice as long?
*Thursday, May 23, 2013 by andrew*

**Geometry**

Find the volume of a rectangular box. The faces have areas of 15, 25, and 60.
*Wednesday, May 22, 2013 by Sarah*

**Math Geometry **

How do you put your knowledge of quadrilaterals to kites?
*Wednesday, May 22, 2013 by Sarah*

**geometry**

find the coordinates of the points which are simultaneously 6 units from the points (6,6) and equidistant from the x and y axis. There are two ways to do this. I would like them both.
*Wednesday, May 22, 2013 by Danni*

**geometry**

find the coordinates of the points which are simultaneously 6 units from the points (6,6) and equidistant from the x and y axis. There are two ways to do this. I would like them both.
*Wednesday, May 22, 2013 by Danni*

**geometry**

Pllllleeeaaasssssssseeeee help me with this math fast! a. Find x. The figure is not drawn to scale. b. Is the triangle equilateral, isosceles, or scalene? Explain. Image at imgur . com / 6y2f9a3
*Wednesday, May 22, 2013 by Neko Boy*

**geometry!!!! PLEASE HELP!!!!**

Bret and Shawn are playing a game where each turn the players roll a 20-sided die fair and then add the number they get to their score. The winner is the player with the highest score at the end of the game (there may be a tie). Before the last turn, Shawn is ahead by 10 ...
*Wednesday, May 22, 2013 by glo*

**geometry help**

Circle Γ with center O has diameter AB=192. C is a point outside of Γ, such that D is the foot of the perpendicular from C to AB and D lies on the line segment OB. From C, a tangent to Γ is drawn, touching Γ at E, where the foot of the perpendicular from E ...
*Wednesday, May 22, 2013 by Mathslover*

**maths**

A letter is picked at random from the English alphabet. Find the probability that the letter : a) Appears in the word GEOMETRY
*Wednesday, May 22, 2013 by arzam*

**Geometry **

Find the center and radius of the circle with equation (x+10)^2+(y-7)^2=36
*Tuesday, May 21, 2013 by West*

**geometry**

A 45 degree arc of circle D has the same length as a 30 degree arc of circle E. what is the ratio of the radius of circle D to the radius of circle E?
*Tuesday, May 21, 2013 by Kiana *

**geometry**

at a distance of 20m from a building, a person who is 3 m tall looks up at an angle of 25 degrees to see the top of the building. how tall is the building to the nearest meter?
*Tuesday, May 21, 2013 by Alia*

**Geometry 1**

Which of the following does not always bisect at least one side
*Monday, May 20, 2013 by Tamesha*

**Geometry**

What is the perimeter and area of a rectangle that has a width of 6 inches and length of 8 inches
*Monday, May 20, 2013 by Lee*

**Physics**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Sunday, May 19, 2013 by AMK*

**MATLAB**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Sunday, May 19, 2013 by AMK*

**Mechanics**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Sunday, May 19, 2013 by AMK*

**Mechanical Engineering**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Sunday, May 19, 2013 by AMK*

**Physics**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Sunday, May 19, 2013 by AMK*

**geometry**

Shape is a trapezoid: LINE AC = 12dm LINE FD = 13dm LINE BE = 14dm LINE CG = 10dm This line makes the right angle of the triangle What is the area?
*Sunday, May 19, 2013 by beck*

**geometry**

This shape is a trapezoid with a semi-circle attached to the side. LINE AB = 8m LINE AD = 8m This is the part of the semi-circle. LINE BC = 10m This is the diagonal side of the trapezoid. What is the area of the shape? What is the perimeter?
*Sunday, May 19, 2013 by beck*

**geometry**

A rhombus has a diagonal with a length of 17 ft. and a side measurement of 9.5 ft. What is the area of the rhombus?
*Sunday, May 19, 2013 by beck*

**geometry**

This question is about the shape of a kite. LINE AC bisects ANGLE BCD and ANGLE BAC ANGLE BCD = 50 degrees ANGLE BAD = 80 degrees LINE DC = 10mm LINE BE = 3mm What is the area of the kite?
*Sunday, May 19, 2013 by beck*

**geometry**

The area of a square is 81 square centimeters. What is the length of the diagonals?
*Sunday, May 19, 2013 by beck*

**geometry**

Jim is in the process of having a hole dug for a trapezoid shaped swimming pool. The pool will take up 121 square meters of the backyard. The distance from one base to the other is 11m. What is the median of the pool?
*Sunday, May 19, 2013 by beck*

**geometry**

what is the area of a regular hexagon with a side length of 6cm?
*Sunday, May 19, 2013 by beck*

**geometry**

Sam went to the park and saw a work crew putting in a square garden. She found a tape measure that was stretched between opposite corners with a measurement of 171.1 feet and decided to find the area. What is the area of the square in yards?
*Sunday, May 19, 2013 by beck*

**geometry**

A rhombus has a side that is 14cm long. One of its diagonals is 24cm long. What is the area?
*Sunday, May 19, 2013 by beck*

**plane geometry**

if an obtuse triangle has an area of 28 sq.in. how do you find the base and height?
*Sunday, May 19, 2013 by harmin*

**Geometry**

<ABD and <DBC are supplemetary. Find the value of x m<ABD and m<DBC.
*Sunday, May 19, 2013 by Trevon*

**Geometry**

a teepee with a dirt floor in the shape of a right cone has a slant height of 26 feet and a radius of 12.5 approximately how much canvas would be needed to cover the tepee?
*Sunday, May 19, 2013 by dem*

**To GANDU MAN**

Your geometry problem of yesterday has been answered. http://www.jiskha.com/display.cgi?id=1368886945
*Sunday, May 19, 2013 by MathMate*

**SIMONSAY, PLEASE HELP**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Saturday, May 18, 2013 by AMK*

**geometry**

findthe exact area of the region bounded by two concentric circles with a radii of 10 and 6 inches
*Saturday, May 18, 2013 by buzz*

**MIT LAB PLEASE HELP**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Friday, May 17, 2013 by AMK*

**PLEASE REPLY**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "...
*Friday, May 17, 2013 by AMK*

**geometry**

The number of lines of symmetry of any regular polygon is equal to the number of sides. Is that correct?
*Friday, May 17, 2013 by kina*

**geometry**

A point P is given outside of a circle Γ. A tangent from P to Γ touches Γ at T with PT=45. A line from P cuts Γ at the 2 points A,B. If PA=25, what is the length of PB?
*Friday, May 17, 2013 by imtiazshaad*

**Geometry**

How many positive integers less than 10^20 have all their digits the same?
*Thursday, May 16, 2013 by Jimmy*

**Geometry**

Find the number of 6 -term strictly increasing geometric progressions, such that all terms are positive integers less than 1000.
*Thursday, May 16, 2013 by Stranger*

**Geometry**

Given the sets A={2,15,21,5,13} and B={6,9,15,12,21} , what is the sum of all the elements in A¾B ?
*Thursday, May 16, 2013 by Steven *

**Geometry**

The three interior angles in a triangle are x ∘ , (2x+24) ∘ and (3x+48) ∘ . What is the value of x ?
*Thursday, May 16, 2013 by Steven *

**Geometry**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ÚBAC. If CN/NB =21 , what is CM/MB ?
*Thursday, May 16, 2013 by Andrew*

**Geometry**

A simple graph G has 200000 edges and for any 3 vertices v,w,x, at least one of the edges vw,wx,xv is not present in G. What is the least number of vertices that G can have?
*Thursday, May 16, 2013 by Sarah*

**Geometry**

Let S be the set of {(1,1),(1,−1),(−1,1)} -lattice path which begin at (1,1) , do not use the same vertex twice, and never touch either the x -axis or the y -axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most ...
*Thursday, May 16, 2013 by John*

**Geometry**

Let A be a convex 61− gon. We then place n points {x i} n i=1 in the interior of A . What is the minimum number n , such that the interior of any triangle, whose vertices are also vertices of A , will contain at least one of the points xi?
*Thursday, May 16, 2013 by John*

**geometry**

What do you notice about lines of symetry in regular polygons?
*Thursday, May 16, 2013 by kina*

**geometry!!!! PLEASE HELP!!!!**

There are 300 students at a local high school. On "All Students Exercise Day", Sam, the Physical Education instructor, wants them to line up in a perfect rectangular formation (same number of students in each row). However, there must be more than 1 student in each ...
*Thursday, May 16, 2013 by flex*

**geometry **

AB= ft2 CB = ft l (slant height) = ft S = ft2 I need to find the answers this is a cone with a radius of 5 and a height of 13. Thank you
*Thursday, May 16, 2013 by Hannah*

**Math (Geometry)**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
*Thursday, May 16, 2013 by Dan *

**Geometry**

There is a 4×6×18 inch cereal box lying on the floor. It was placed face down on one of its 6×18 inch face. An ant is located at one of the bottom corners of the box. It wants to reach the opposite bottom corner (of the 6×18 face on the floor), by ...
*Wednesday, May 15, 2013 by Anonymous*

**geometry**

The Transamerica Pyramid in San Francisco is shaped like a square pyramid. It has a slant height of 856.1 feet and each side of its base is 145 feet. Find the lateral area of the building.
*Wednesday, May 15, 2013 by Hannah*

**geometry **

Find the surface area of a cone with diameter 27 m and slant height 19 m. Leave your answer in terms of pie
*Wednesday, May 15, 2013 by Hannah*

**analytical geometry**

make a full analysis of algebraic equation of y=(x-2)^2(x^2-9)
*Wednesday, May 15, 2013 by meagan*

**geometry**

diagonals of pqrs intersect each other at point a also ar = 3ap and as= 3aq, prove that sr =3pq
*Wednesday, May 15, 2013 by rishi*

**Math (Geometry)**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
*Wednesday, May 15, 2013 by Dan *

**Math (Geometry)**

A point P is given outside of a circle Γ. A tangent from P to Γ touches Γ at T with PT=45. A line from P cuts Γ at the 2 points A,B. If PA=25, what is the length of PB?
*Wednesday, May 15, 2013 by Dan *

**Math (Geometry)**

ABCD is a parallelogram with side lengths AB=15,BC=10 and ∠ADC=75∘. A point P in the interior of the parallelogram is chosen such that ∠APD+∠CPB=180∘. What is the measure (in degrees) of ∠PAD+∠PCB?
*Wednesday, May 15, 2013 by Dan *

**geometry**

a rectangular flower garden is surrounded by a grass border, the grass border is 5 meters wide on all sides of the flower garden and the outer dimensions are 50 meters by 40 meters. What is the area of the grass border?
*Tuesday, May 14, 2013 by Herman*

**Geometry **

one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product of 10 and x is the ...
*Tuesday, May 14, 2013 by ji*

**Geometry please help**

Ravi wants to trisect an angle AOB, which has measure θ. From A, he drops a perpendicular to side OB, intersecting at C. He then constructs an equilateral triangle ACD on the opposite side of AC as compared to O. He claims (without any justification) that 2∠DOB=&#...
*Tuesday, May 14, 2013 by Mathslover*

**Probablity**

Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once...
*Tuesday, May 14, 2013 by Mathslover*

**MATH **

JOhn had prepared the problem sets for Levels 1 to 5 of Geometry and Combinatorics for next month but forgot to label which set was for which level. Since Calvin didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once...
*Tuesday, May 14, 2013 by intermediate player PLEASE HELP*

**geometry**

To estimate the height of a flagpole, Marci, who is 5 feet tall stands so that her lines of sight to the top and bottom of the pole form a angle. What is the height of the pole to the nearest foot?
*Monday, May 13, 2013 by Stan*

**geometry**

A bicycle wheel is 56cm in diameter . How many complete turns does it make in travelling 1km ? Use the value ^ for( 22/7)
*Monday, May 13, 2013 by Ruth hirst*

**Geometry**

ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of A. If CN/NB=21, what is CM/MB ?
*Monday, May 13, 2013 by AA*

**geometry **

write and equation of a line perpendicular to the line y=1/2x+10 and passes through (0,3)
*Sunday, May 12, 2013 by Jay*

**geometry**

Suppose θ is an angle strictly between 0 and π 2 such that sin5θ=sin 5θ. The number tan2θ can be uniquely written as ab √, where a and b are positive integers, and b is not divisible by the square of a prime. What is the value of a+b?
*Saturday, May 11, 2013 by Anonymous*

**geometry**

find the area of an equilateral triangle with an apothem having a length of 4 feet. round to the nearest tenth
*Friday, May 10, 2013 by Anonymous*

**geometry**

find acute angles A and B satisfying cot(A+B)=1 , cosec (A-B)=2
*Thursday, May 9, 2013 by ajit yadav*

**Geometry**

A farmer has 52 meters of fencing to make a rectangular corral. If the width is x, what is the length and area?
*Thursday, May 9, 2013 by Brandy*

**Geometry**

the vertices of a parallelogram are a(3,-1),b(4, 3),c(7, 5), and d(6, 1). at what point do the diagonals intersect?
*Thursday, May 9, 2013 by Billy*

**re: geometry**

A=5 and c=2√10, then b=?
*Wednesday, May 8, 2013 by lu*

**Geometry**

A=5 and c=√10, then b=?
*Wednesday, May 8, 2013 by lu*

**Geometry**

A=5 and c=√10, then b=?
*Wednesday, May 8, 2013 by lu*

**geometry**

Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole? step by step on how to do it?
*Wednesday, May 8, 2013 by maria*

**geometry**

Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole?
*Wednesday, May 8, 2013 by raul*

**geometry!!! please help me!!!!**

Determine the least positive integer n for which the following condition holds: No matter how the elements of the set of the first n positive integers, i.e. {1,2,…n}, are colored in red or blue, there are (not necessarily distinct) integers x,y,z, and w in a set of the ...
*Wednesday, May 8, 2013 by sanji*

**geometry **

How to get answer for c=2 pie r 4 yards
*Tuesday, May 7, 2013 by shardae*

**geometry**

find acute angie A and B satisfying cot(A+B)=1 , cosec(A-B)
*Tuesday, May 7, 2013 by ajit yadav*

**geometry!!! please help me!!!!**

ABC is a triangle with ∠ACB=45∘. D is a point on AC such that AD=2DC. If ∠ADB=60∘, what is the measure (in degrees) of ∠CAB?
*Tuesday, May 7, 2013 by glo*

**geometry!!!! PLEASE HELP!!!!**

A,B,C,D,E,F are 6 consecutive points on the circumference of a circle such that AB=BC=CD=10,DE=EF=FA=22. If the radius of the circle is √n, what is the value of n? Details and assumptions: -The lengths given are side lengths, not arcs.
*Tuesday, May 7, 2013 by fudgee*

**geometry**

find acute angles A and B satisfying cot(A+B)=1 , cosec(A-B)=2
*Tuesday, May 7, 2013 by ajit yadav*

**geometry**

Γ is a circle with radius 10 and center O. A and B are points on Γ such that the arc length ABˆ=13. What is the area of sector AOB?
*Tuesday, May 7, 2013 by girija prasad lenka*

**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 is 9in and the height ...
*Monday, May 6, 2013 by danielle*

**Geometry**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 17 more times to get chords C2,C3,…,C18. What is the expected number of pairs of chords that intersect?
*Sunday, May 5, 2013 by Sambaran G.*

**Geometry**

ABCDEF is a regular hexagon with side length 43√4. Points G,H,I,J,K,L are chosen uniformly at random, one from each side of the hexagon. What is the expected area of hexagon GHIJKL?
*Sunday, May 5, 2013 by Sambaran G.*

**geometry**

What are degrees of angles for pentagon with 36 sides
*Sunday, May 5, 2013 by Jeff*

**geometry**

The construction of the regular pentagon is equivalent to the construction of the point in the unit circle with x coordinate x1 = the square root of 5 - 1 divided by 4. Use this to construct a regular pentagon that has all its vertices inside the unit circle. Write a ...
*Sunday, May 5, 2013 by Jo-Anne*

**Analytic Geometry**

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0 .
*Sunday, May 5, 2013 by John*

**geometry**

The longer diagonal of a parallelogram measures 62 cm and makes an angle of 30 degrees with the base. Find the area of the parallelogram if the diagonals intersect at angle of 70 degrees.
*Sunday, May 5, 2013 by Katreena*

**geometry **

Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a 90 degree triangle and one side is 3 cm
*Saturday, May 4, 2013 by Hannah*