Questions on Geometry: Circles and their properties answered by real tutors!

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Geometry: Circles and their properties

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Question 33776: In a circle O, chords AB and CD intersect at E (not center).
AE = X, EB = X+1, CE = X-1 and ED = 2X.
Find AE.
Click here to see answer by venugopalramana(3286)

Question 33756: Give center and radius of the circle
(x+2)^2 + (y+2)^2=25
Click here to see answer by mukhopadhyay(490)

Question 33845This question is from textbook

: In order to have a sector and a segment of a circle have equal(as equal as possible) areas, the angle created by the two radi of the sector must be 180 degree's.
True or FalseThis question is from textbook

Click here to see answer by venugopalramana(3286)

Question 33757: Give the center and radius of the cirle.
(x+.5)^2 + (y-6)^2=35
Click here to see answer by venugopalramana(3286)

Question 33826: Solve for all values of X.
(2x over x+3)+ (3 over x-3) = (8 over x squared - 9)
Click here to see answer by fanism(39)

Question 34353This question is from textbook discovering geometry an investigative approach

: a tangent to a circle ______ the radius drawn to the point of tangency.This question is from textbook discovering geometry an investigative approach

Click here to see answer by AnlytcPhil(958)

Question 34511: A triangle with sides of 5, 12 and 13 has both an inscribed and a circumscribed circle. What is the distance between the centers of those circles.
Click here to see answer by venugopalramana(3286)

Question 34618: a circle with radius 6
Click here to see answer by checkley71(8405)

Question 34712: Two parallel chords 16 centimeters and 30 centimeters long are 23 centimeters apart. Find the radius of the circle.
Click here to see answer by venugopalramana(3286)

Question 34922: I have been on this for hours, if any one can please direct me.
A polynomial f(t) of degree 3 satisfies f(−2) = 0, f(2) = 4, f'(−1) = 2, and f'(1) = −6.
(a) Write the general form of the polynomial and its derivative.
(b) Find four linear equations that must be satisfied by the unknown coefficients in the polynomial.
(c) Write the augmented matrix for your system of equations in (b) and row-reduce.
Click here to see answer by venugopalramana(3286)

Question 36100: find the area of a cylinder with a radius if 5 centimeters and a height of 9 centimeters
Click here to see answer by tran3209(100)

Question 36510: (1) find the center of the circle whose equation is

x^2+ y^2-3x+8y-8=0

(2) write the equation of the circle with center (-2,1) and which passes through (3,4).
Click here to see answer by venugopalramana(3286)

Question 36317: (a): Find the equation of the line joining the points
(─5, 2, 3) and (5, ─ 2, 3).
(b) Find the equation of the sphere, which contains the circle
x2 + y2 + z2 = 9, 3x + 3y + 3z = 5 and
passes through the origin.
Click here to see answer by venugopalramana(3286)

Question 36818: The volume of a cone is 150pi cubic inches. The height of the cone is 30 inches. What is the radius of the cone in inches?
Click here to see answer by checkley71(8405)

Question 37105This question is from textbook geometry

: a) Find the radii of the circles x^2 + y^2 = 2 and (x-3)^2 + (y-3)^2 = 32
b) Find the distance between the centers of the circles
c) Explain why the circles must be internally tangentThis question is from textbook geometry

Click here to see answer by AnlytcPhil(958)

Question 37568:
incase you cannot read that it says, In the diagram, a regular hexagon is inscribed in a circle. what is the measure of the inscribed angle ABC?
Click here to see answer by fractalier(1804)

Question 37637: write the equation of the circle
center: (6,6)
radius: (-4,3)
....help?
Click here to see answer by Earlsdon(4900)

Question 37653:
Find the measure of Arc AB
Click here to see answer by stanbon(26291)

Question 37625: if a Quad is inscribed in a circle, how do i find the measures of the angles of the quad?
ex:
left: 26y on top 21y on bottom
Right: 3x on top 2x on bottom
thanks.
Click here to see answer by venugopalramana(3286)

Question 37700: here is an equilateral triangle inside a square.The perimeter of the triangle is 48 centimeters.What is the perimeter of the square?
Click here to see answer by Paul(988)

Question 37742:

in the diagram, two chords of Circle O, AC and BD intersect at E. measure of angle DEC=88 and measure of arc DC= 81. what is the measure of arc AB?
Click here to see answer by fractalier(1804)

Question 38210: two parallel chords, 16 cm and 30 cm are 23 cm apart. find the radius of the circle that contains them.
Click here to see answer by fractalier(1804)

Question 38604: could you show me what a 8cm mass or circle would be equilivant to?
Click here to see answer by rapaljer(3622)

Question 39618: The ratio of the volume of two spheres is 216:125. What is the ratio of their diameters?
Click here to see answer by venugopalramana(3286)

Question 39617: The ratio of the volume of two spheres is 216:125. What is the ratio of their diameters?
Click here to see answer by venugopalramana(3286)

Question 39723: what is the formula for finding the circumfrence of a circle?
Click here to see answer by josmiceli(3012)

Question 39826: problem given by teacher from a worksheet
3 circles on the same straight line, the 1st with a radius of 16 cm, the 2nd with a radius of 9cm, is there a way to find the radius of the 3rd circle which sits in between the other two?
thank you
Click here to see answer by venugopalramana(3286)

Question 40289: Hellow! I am 15 years old schoolboy from Bulgaria. My english is not very good, but i can't find any information about my problem in bulgarian and I find this site. What is my question? My math teacher give me a task to present in class info about "polygons inscribed in circle AND cicumscribed on circle". I hope that with my awfil language I succeed to write the right title of the theme. I have to draw examples and write some dependenses and properties. Thank you in advance!
Click here to see answer by stanbon(26291)

Question 37550: In the diagram, Circle O has a diameter of 34, AB= 16, and segment CD is perpendicular to AB. What is the length of XC?
There is a circle drawn with a vertical diameter. there is a chord drawn about half way down the bottom half of the diameter. and XC is from the middle of the chord to C at the bottom of the circle
Click here to see answer by venugopalramana(3286)

Question 37570:
In the diagram, Circle O has a diameter of 34, AB=16 and segment CD is perp. to segment AB. What is the length of segment XC?
Click here to see answer by venugopalramana(3286)

Question 40345: find center and radius of this circle
x^2+y^2+6x-4y+5=0
Click here to see answer by venugopalramana(3286)

Question 41006: State which of the following figures are cyclic and which are non cyclic: parallelogram, triangle, trapezium, right-angled trapezium and isosceles trapezium.
Click here to see answer by psbhowmick(456)

Question 36507This question is from textbook Geometry: Seeing, Doing, Understanding

: I have a problem with simplifying this ratio:
2a+2b+2c/2(pi)a+2(pi)b+2(pi)c

Pi being the number piThis question is from textbook Geometry: Seeing, Doing, Understanding

Click here to see answer by astromathman(21)

Question 18682: do the formulas for the area of a circle and the circumfrence of a circle represent linear relationships?
Click here to see answer by astromathman(21)

Question 36667: The circumference of a circle is 132 yds. Find the radius using n=22/7
Click here to see answer by fractalier(1804)

Question 43778: State the circle and radius of the circle given by (x-2)^2+(y+3)^2=20
Click here to see answer by Nate(3495)

Question 43778: State the circle and radius of the circle given by (x-2)^2+(y+3)^2=20
Click here to see answer by jake_6233(74)

Question 44369: I need to know the radius and center for this equation. It is for circles.
x^2/17+y^2/17=17.
Click here to see answer by stanbon(26291)

Question 44370: I need to know the radius and center for this equation. It is for circles.
x^2-6x+y^2=226/25.
Click here to see answer by stanbon(26291)

Question 44371: I need to know the radius and center for this equation. It is for circles: 256x² + 256y² = 64

Click here to see answer by AnlytcPhil(958)

Question 44376: If radius is 7 and diameter is 9, what is circumference?
Click here to see answer by checkley71(8405)

Question 44490: I need to know the radius and center for this equation. It is for cirles.
4x^2+75x-35y+4y^2=0
Click here to see answer by venugopalramana(3286)

Question 44789: If the diameter of a circle is 1.3 times 10^-12 meters, then what is its radius? I need to show any work as well as the answer.

Thanks
Click here to see answer by stanbon(26291)

Question 45234: Can you please help me with this problem?
What is the standard form of the equation of the circle with a center (o,-2) and a radius (square root of 14)?
Click here to see answer by rapaljer(3622)

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