Friday

July 25, 2014

July 25, 2014

Number of results: 20,474

**Geometry **

in circle p below the lengths of the parallel chords are 20,16, and 12. Find measure of arc AB..... the chord with a length of 20 is the diameter. the chords with lengths 16 and 12 are below the diameter torwards the bottom of the circle. arc AB is the arc made up of the ...
*May 25, 2012 by John*

**math**

in circle p below the lengths of the parallel chords are 20,16, and 12. Find measure of arc AB..... the chord with a length of 20 is the diameter. the chords with lengths 16 and 12 are below the diameter torwards the bottom of the circle. arc AB is the arc made up of the ...
*May 25, 2012 by Bo*

**gometry**

in a circle of radius 17cm, two parallel chords are drawn on opposite sides of a diameter. the distance between the chords is 23cm. if the length of one chords is 16cm, find the length of the other.
*June 17, 2014 by Anonymous*

**geometry**

Two parallel chords lie on opposite sides of the centre of a circle of radius 13cm.their lengths are 10cm and 24cm.what is the distance between the chords?
*November 14, 2010 by Justice*

**geometry**

Two parallel chords lie on opposite sides of the centre of a circle of radius 13cm.their lengths are 10cm and 24cm.what is the distance between the chords?
*November 14, 2010 by Justice*

**math**

two parallel chords lie on opposite sides of the centre of a circle of radius 13cm.their lengths are 10cm and 24cm. what is the distance between the chords
*October 26, 2013 by maryam*

**Circle Geometry - chords in a circle**

Let PQ, RS , and TU be parallel chords of a circle. The distance between chords PQ and RS is 4, and the distance between chords RS and TU is also 4. If PQ = 78 TU=50 , then find RS. how to do this? Draw some lines?
*March 21, 2013 by Knights*

**Math**

Two chords intersect inside a circle. The lengths of the segment of one chord are 4 and 6. The length of the segment of the other chords are 3 and what?
*September 23, 2011 by Rhonda*

**math**

n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).
*February 2, 2013 by Brenda*

**math**

n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).
*February 2, 2013 by Brenda*

**Geometry**

HELP! Two Chords AB and CD, are equidistant from the center of a circle. AB=3x+7 and CD=27-x. Solve for x and find the lengths of AB and CD
*June 10, 2011 by Alex*

**solid mensuration**

Two perpendicular chords divide a circle with a radius of 13 cm into 4 parts. If the perpendicular distances of both chords are 5 cm each from the center of the circle, find the area of the smallest part. Please include solution. Thanks.
*December 1, 2012 by Cathy*

**geometry**

there exists a circle with chords. the chords are congruent. their corresponding arc measurements are 80 degrees and 2x+10 solve for x
*May 21, 2014 by Tim*

**Math**

Two lengths are drawn from a Point P to a circle centre (o). The radius of the circle is 8.2cm and P is 12.4cm from o. Find the angle between the tangents. Please help, I really don't understand it.
*April 2, 2008 by Anonymous*

**maths**

eight points lie on the circumference of a circle. one of them is labelled P. chords join some or all of the pairs of these points so that the seven points other than P lie on different numbers of chords. what is the minimum number of chords on which P lies? If chords join "...
*July 22, 2007 by Jarin*

**Geometry**

Two parallel chords lies on opposite sides of the centre of a circle of radius 13cm. Their length are 10cm and 24cm what is the distance between the chords
*March 5, 2014 by Temi*

**Geometry**

In my book there's a picture of an equalderal triangle. This is given information. Inside the triangle all three altitudes have been drawn to find the center point of gravity. The incircle is drawn. The circumcircle is drawn. Given that the radius of the incricle is 1, what is...
*May 15, 2008 by Geometry*

**geometry**

Given Circle D, if AC = 16 units, then what is the length of CB? A circle is drawn with center D. Two radii are drawn, AD and DC. Segment AC is drawn with a perpendicular, DB.
*August 31, 2010 by Rob*

**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?
*May 5, 2013 by Sambaran G.*

**Math**

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?
*May 5, 2013 by Mathslover Please help*

**Math Help**

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?
*May 8, 2013 by Mathslover Please help*

**geometry **

in circle O, perpendicular chords AB and CD intersect at E so that AE=2, eb=12 and CE=4. find the radius of a circle O and the shortest distance from e to the circle
*December 15, 2013 by ajhane*

**Geometry**

The question is to find the measure of arc PQ in Circle A. The point A is the center of the circle, and the chords PR and SQ intersect at the center. Arc PQ is (3y-10), while arc SR is (2y+20). I know there's a theorem that states that when two chords intersect in the interior...
*April 1, 2008 by Nikki*

**Geomatric series**

A fractal is created: A circle is drawn with radius 8 cm. Another circle is drawn with half the radius of the previous circle. The new circle is tangent to the previous circle. Suppose this pattern continues through five steps. What is the sum of the areas of the circles? ...
*November 25, 2012 by HanuMath25/11*

**Math**

write a formula that gives you the number of regions formed when x points are placed on a circle and all possible chords are drawn. ex. 2pts has 2 regions, 3pts has 4 regions, 5pts has 17 regions
*January 6, 2011 by carl*

**Math**

write a formula that gives you the number of regions formed when x points are placed on a circle and all possible chords are drawn. ex. 2pts has 2 regions, 3pts has 4 regions, 5pts has 17 regions
*January 7, 2011 by bob*

**algebra**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 3 more times to get chords C2,C3,C4. The probability that no pair of chords intersect can be expressed as a/b where a and b are coprime positive integers. What ...
*March 27, 2013 by Anonymous*

**Math (URGENT)**

write a formula that gives you the number of regions formed when x points are placed on a circle and all possible chords are drawn. ex. 2pts has 2 regions, 3pts has 4 regions, 5pts has 17 regions
*January 6, 2011 by carl*

**Geometry**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...
*March 26, 2013 by jason*

**Geometry**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...
*March 26, 2013 by jason*

**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.
*May 7, 2013 by fudgee*

**maths-Circles**

O is the centre of a circle which has two chords BA and BC with point B on the circumference of the circle.If OB bisects angle ABC,prove that AB=AC
*February 25, 2013 by Anonymous*

**Geometry**

A circle of radius 1 is drawn in the plane. Four non-overlapping circles each of radius 1, are drawn (externally) tangential to the original circle. An angle ã is chosen uniformly at random in the interval [0,2ð). The probability that a half ray drawn from the centre of the ...
*April 20, 2013 by Anonymous*

**circle**

two parallel chords of length 30 cm and 16 cm are draw on the opposite sides of center of a circle of radius 17 cm find the distance between the chord
*November 1, 2012 by surbhi kumari*

**circle**

two parallel chords of length 30 cm and 16 cm are draw on the opposite sides of center of a circle of radius 17 cm find the distance between the chord answer
*November 1, 2012 by surbhi kumari*

**Geometry**

Suppose that line t is tangent to circle center O and radius OP at point P and that secant l, which is parallel to t, intersects circle at the two points A and B. Prove chords AB and BP are congruent
*April 21, 2011 by TM*

**Math**

A circle of radius 1 is drawn in the plane. Four non-overlapping circles each of radius 1, are drawn (externally) tangential to the original circle. An angle γ is chosen uniformly at random in the interval [0,2π). The probability that a half ray drawn from the centre...
*June 24, 2013 by Dan*

**Geometry-8th grade**

In circle O, chords AB and CD are congruent. Ab measures 2x + y, while CD measures 16.5 Two other chords are congruent. GH equals x +2y and KL equals 13.5 I set them up like this 2x + y = 16.5 x+2y = 13.5 then I substituted-rewrote it x = 13.5-2y Then substituted 2(13.5) + y...
*March 7, 2011 by Anna*

**Geometry-8th grade**

In circle O, chords AB and CD are congruent. Ab measures 2x + y, while CD measures 16.5 Two other chords are congruent. GH equals x +2y and KL equals 13.5 I set them up like this 2x + y = 16.5 x+2y = 13.5 then I substituted-rewrote it x = 13.5-2y Then substituted 2(13.5) + y...
*March 7, 2011 by Anna*

**math**

A circle has an area of 25 pi cm^2.If a circle is drawn within that circle with a diameter equal to the radius of the first circle, what is the area of the second circle? a. 2 1/2 pi cm^2 b. 4 1/4 pi cm^2 c. 5 1/4 pi cm^2 d. 6 1/4 pi cm^2 e. 7 1/2 pi cm^2 please answer and ...
*January 5, 2014 by Thomas*

**Geometry**

Two parallel chords of lenght 24cm and 10cm which lie on opposite side of a circle are 17cm apart. Calculate the radius of the circle to the nearest whole number.
*October 28, 2011 by Omol*

**Maths**

Two parallel chords of lenght 24cm and 10cm which lie on opposite sides of the circle are 17cm apart.calculate the radius of the circle to the nearest whole number.
*April 7, 2014 by Peterson*

**ALGEBRA II**

In circle O, chords AB and CD are congruent. AB measures 2x + y, while CD has a length of 16.5. Two smaller chords, GH and KL, are also congruent. GH measures x + 2y, while KL has a length of 13.5. Find the values of x and y.
*March 9, 2011 by ELIZA *

**Algebra**

The lengths in feet of three ropes are consecutive multiples of three. If each rope were four feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
*September 19, 2013 by Anonymous *

**Algebra**

The lengths in feet of three ropes are consecutive multiples of three. If each rope were four feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
*September 19, 2013 by Anonymous*

**geometry**

Two chords intersect a circle. The shorter chord is divided into segments of lengths of 9 inches and 12 inches. The longer chord has a length of 24 inches. Find the length of the shorter portion of the longer chord .
*November 24, 2010 by Sara *

**geometry (help steve)**

A circle of radius 1 is drawn in the plane. Four non-overlapping circles each of radius 1, are drawn (externally) tangential to the original circle. An angle γis chosen uniformly at random in the interval [0,2π). The probability that a half ray drawn from the centre ...
*June 24, 2013 by stranger*

**math**

in circle O, chords AB and CD intersect at E. If AE = 3, EB = 4, CE = x, and ED = x-4, what is the value of x?
*February 8, 2010 by beau*

**math **

greatest no. of regions in a circle with 4 chords?
*March 20, 2013 by esha*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**trig**

In a diagram of circle, chords AB and CD intersect at E. If AE = 3, EB = 4, CE = x, and ED = x - 4, what is the value of x?
*February 1, 2010 by andy*

**geometry**

in the accompanying diagram of circle O,chords AB and CD intersect at E. If AE=3,EB=4,CE=x, and ED=x-4,what is the value
*January 28, 2010 by cesar,eduard*

**Math**

How many chords are determined by seven points on a circle? How do you do it, not answer.
*May 5, 2014 by dddd47906*

**math **

I am supposed to find the area of a segment of a circle. The circle is cut with two radi with an angle of 90 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and the edge of the circle ...
*May 4, 2013 by Ed*

**math**

I am supposed to find the area of a segment of a circle. The circle is cut with two radi with an angle of 90 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and the edge of the circle ...
*May 5, 2013 by Hannah*

**geometry**

given: chord AB is parallel to chord CD prove if two chords of a circle are parallel, the two arcs between the chords are congruent. Prove: arc AC is congruent to arc BD
*February 7, 2011 by maya*

**Math**

A bag contains 4 green marbles, 6 red marbles, and 2 white marbles. Three marbles are drawn at random with replacement. With replacement means that after a marble is drawn, it is replaced before the next one is drawn. Find the probability of all three blue.
*May 18, 2012 by Junior*

**math**

a triangle with side lengths 26, 28, and 30 is constructed so that the longest and shortest sides are tangent to a circle. the third side passes throught the center of the circle. compute the radius of the circle
*January 10, 2011 by LULU*

**algebra**

a piece of wire that is 58cm long is cut into three pieces. the longest piece is 6cm shorter than the sum of the lengths of the other two pieces. five times the lengths of the shortest piece is 10cm less than the sum of the lengths of the other two pieces. determine the ...
*October 22, 2010 by ckim*

**MATH!!!!**

A triangle with side lengths 26, 28, and 30 is constructed so that the longest and shortest sides are tangent to a circle. the third side passes through the center of the circle. compute the radius of the circle. I DONT KNOW HOW TO DO THIS AT ALL....
*January 28, 2011 by Diana*

**Gradient of circle?**

A circle has the equation x^2+y^2-4x+6y-12=0 and i have already found that the centre has a coordinate of (2,-3), and a radius of 5 units. But i need to find points on the circle that has the gradient of -4/3 when a tangent is drawn on the point. How do i do that???
*September 26, 2009 by Marrion*

**maths**

the radius of a circle is 8cm and the length of one of its chords is 12cm. find the distance of the chord from the centre
*February 23, 2012 by sushma *

**Maths**

The radius of a circle is 8cm, and the length of one of its chords is 12cm. Find the distance of the chord from the centre.
*January 14, 2013 by Priyanka *

**maths-Circles**

There are two equal chords AB and and CD of a circle whose centre is O , when produced meet at point E. prove that EB=ED and EA=EC
*February 26, 2013 by Anonymous*

**Algebra**

The length in feet of three ropes are consecutive multiples of three. If each rope were 4 feet shorter, the sum of their lengths would be 42 feet. Find the lengths of the three ropes.
*September 19, 2013 by Anonymous *

**maths**

AB=36 cm and M is the mid-point of AB. Semicircles are drawn on AB,AM and Mb as diametrs.A circle with centre C touches all the three circles. Find the area of the shaded region.
*December 24, 2012 by Anonymous*

**math**

When chords intersect in a circle, the vertical angles formed intercept congruent arcs. always sometimes never
*January 6, 2011 by danny*

**geometry**

showing a circle with centre 0. 0M and 0N meet the chords PR and RS perpendicularly at M and N respectively Given that PR=12cm and RS=16cm find the radius
*January 25, 2011 by Lola*

**maths**

1.how many non congruent right triangles with positive integer leg lengths have areas that are numerically equal to 3 times their perimeters? 2.a triangle with side lengths in the ratio 3:4:5 is inscribed in a circle of radius 3.what is the area of the triangle? 3.what is the ...
*May 7, 2013 by ramesh reddy*

**math**

From an exteror point P that is h units form a circle of radius r, a tangent line is drawn to the circle. Let d denote the distance from the point P to the point of tangency T. Express d as a function of h.(HINT: if C is the center of the circle, the PT is perpendicular to CT)
*January 30, 2012 by brittany*

**math**

A regular hexagon is drawn inside of a circle so that each of its vertices touches the circle. The diameter of the circle is 4 centimeters and the perimeter of the hexagon is 12 centimeters. How much longer is the circumference of the circle than the perimeter of the hexagon...
*April 30, 2014 by Chris*

**Math**

If a circle is drawn that contains all four vertices of a rectangle(24x18) and the area of the circle is k(3.14) square centimeters, what is k?
*July 12, 2013 by Anonymous*

**math**

the lengths of the three sides of a right triangle R have odd integer values and two of the three sides have lengths 3 and 5. What is one possible length of the third side?
*July 23, 2013 by max*

**math **

AB=36cm and M ismid point ofAB semicircles are drawn inAB,AMandMBas diameter.a circlewith centreO touches all three semi circle find radius?
*March 25, 2013 by menu*

**mathematics**

Two equal circle touch externally at point P. PX and PY are chords in the respective circles which are perpendicular. If the centres Are A and B. Show that AX is parallel to BY and AXYB is a parallelogram.
*May 4, 2014 by Anonymous*

**GEOMETRY INSCRIBED ANGLES MULTIPLE CHOICE QUESTION**

segment BC is tangent to circle A at B and to circle D at C. (Not drawn to scale) AB=10 BC=25 and DC=3. Find AD to the nearest tenth. Hint: Draw an auxiliary line from D to segment BA. {There are two circles, the larger one has point A in the center and a dotted line going up ...
*May 15, 2012 by aYaMe ;)*

**math**

Chords AC and BD intersect at the center of circle ABCD. If the length of CP = 8, which is the length of PB?
*March 31, 2011 by mark*

**Geometry - Circles and tangents**

Two circles of radius 1 are externally tangent at Q . Let PQ and QR be diameters of the two circles. From P a tangent is drawn to the circle with diameter QR , and from R a parallel tangent is drawn to the circle with diameter PQ . Find the distance between these two tangent ...
*March 21, 2013 by Knights*

**Geometry**

Which three lengths cannot be the lengths of the sides of a triangle? A)25 m, 16 m, 10 m B)15 m, 13 m, 12 m C)18 m, 5 m, 10 m D)8 m, 8 m, 15 m
*December 6, 2012 by Jessie*

**Geometry Inscribed**

line BC is tangent to circle A at B and to circle D at C (not drawn to scale) AB=11, BC=23,and DC=2. find AD to the nearest tenth. Image: i.imgur(dot)com/f4ThxTu.jpg
*March 9, 2013 by Rose*

**Math**

I am supposed to find the area of the shaded section of a circle. The circle is cut with two radi with an angle of 60 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and the edge of ...
*December 16, 2009 by Punkie*

**Statistics**

A bag of marbles has 5 Green, 4 Red, and 3 yellow marbles. Three marbles are randomly drawn from the bag, without replacement: What is the probability that at least one of the three marbles drawn are red? What is the probability that only one of the three marbles drawn is red...
*June 7, 2011 by dan*

**geometry**

An Equilateral triangle (ABC) is inscribed inside a circle. The side lengths of the triangle are 8 cm. What is the radius of the circle?
*March 29, 2011 by Katy*

**maths**

there are two circles touching each other at one point. The radius of bigger circle is 4cm and smaller is 1cm. A small third circle is drawn which touches both the first two circles at one point each. A common tangent passes through all the three circles.Find the radius of ...
*December 21, 2012 by faizel*

**Math**

Cindy has two fourths of a circle and three tenths of a circle. What does she need to make a whole circle?
*October 26, 2009 by Juanita*

**5th grade**

Cindy has two fourths of a circle and three tenths of a circle. What does she need to make a whole circle?
*April 22, 2009 by Brooke*

**Physics**

Three point charges, -6.35 10-9 C, -8.20 10-9 C, and +7.75 10-9 C, are fixed at different positions on a circle. The total electric potential at the center of the circle is -2210 V. What is the radius of the circle?
*January 30, 2012 by Anne*

**math**

a rope is cut into three pieces P,Q and R.the lengths of the pieces are in the ratio 3:5:7.if the is 33 feet and 9 inches long,find the lengths of P,Q, and R
*December 11, 2013 by Brianna*

**GEOMETRY QUESTION**

Four circles of unit radius are drawn with centers (0,1), (-1,0), (0,1), and (0,-1). A circle with radius 2 is drawn with the origin as its center. What is the area of all points which are contained in an odd number of these 5 circles? (Express your answer in the form "a pi + ...
*November 25, 2012 by SUPER HARD*

**Physics pls anyone can help me? its urgent**

A charged rod of length 21cm and total charge -7.5muC is bent into a three-quarter circle symetric about the x-axis as shown below What is the magnitude of the Electric Field at the center of the three-quarter circle in N/C ?:Which directions listed below make up the ...
*October 20, 2013 by nisha*

**geometry**

In a circle with centre P,a chord AB is parallel to a tangent & inersects the radius drawn from a point of contact at the midpoint of the radius .If AB=12,FIND THE RADIUS OF THE CIRCLE.
*July 14, 2011 by Mahek*

**Math**

From an exterior point P that is h units from a circle of radius r, a tangent line is drawn to the circle. Let y denote the distance from the point P to the point of tangency T. Express y as a fuction of h.
*January 29, 2012 by Jennifer*

**DIT**

Given the co-ordinates (x,y) of a center of a circle and it's radius. determine whether a point lies inside the circle or outside the circle? Tell three formlaes which are used in this question?
*April 8, 2011 by AKHLAQ*

**Physics**

Two 0.33 kg blocks are attached to a 1.62m long string such that the lengths of the three string segments are equal. The ends of the string are attached to the ceiling at points separated by 1m. Each segment is 0.54m long. (If drawn, it will form a trapezoid.) What is the ...
*June 16, 2011 by shay*

**math**

Three cards are drawn without replacement from a well-shuffled deck of 52 playing cards. What is the probability that the third card drawn is a diamond?
*November 15, 2012 by eric*

**math**

A triangle has an area of 15 cm^2 and a base of 5 cm. If a circle is drawn with a diameter equal to the length of the triangle's height, what is the area of the circle ? a. 6 pi cm^2 b. 9 pi cm^2 c. 12 pi cm^2 d. 18 pi cm^2 e. 36 pi cm^2 please answer and explain
*January 5, 2014 by Thomas*

**geometry**

Angle C is an inscribed angle of circle P. Angle C measures (-3x - 6)° and arc AB measures (-4x)° . Find x. circle P with points A, B, and C on the circle and inscribed angle A C B drawn Question 4 answers -2 -4 -6 -8
*August 26, 2011 by jessica*

**Math Geometry**

Four circles of unit radius are drawn with centers (1,0), (-1,0), (0,1), and (0,-1). A circle with radius 2 is drawn with the origin as its center. What is the area of all points which are contained in an odd number of these 5 circles? (Express your answer in the form "a pi + ...
*August 3, 2013 by 3.1415926...*

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