# math

A segment with endpoints C(-3, 3)and D(7, 3) is the diameter of a circle.

a. What is the center of the circle?
b. What is the length of the radius?
c. What is the circumference of the circle?
d. What is the equation of the circle?

1. 0
2. 0
3. 21
1. look at the points, a diameter is along the y axis. Its length is y1-y2=10

1. 0
2. 0
posted by bobpursley
2. (a) center O is at midpoint of CD (O = (C+D)/2)
(b) radius r is the distance OC or OD (use your distance formula)
(c) circumference = 2pi*r
(d) if O is (h,k) then the equation is (x-h)^2 + (y-k)^2 = r^2 (from a and b above)

1. 0
2. 0
posted by Steve

## Similar Questions

1. ### Geometry

Prove that the tangents to a circle at the endpoints of a diameter are parallel. State what is given, what is to be proved, and your plan of proof. Then write a two-column proof. Hint draw a DIAGRAM with the points labeled. Can

asked by DANIELLE on July 5, 2007
2. ### Precalculus

A line segment has endpoints A=(1,3) and B=(13,19). a) Find the equation of the circle for which the segment AB is a diameter. Ans: (x - 7)^2 + (y - 11)^2 = 100 b) Accurate to the nearest tenth, the circumference of this circle is

asked by jh on March 9, 2010

Segment AB has endpoints A(-3, 4) and B(-5, 2). Segment AB is reflected over the y axis to form segment A’B’. What are the coordinates for the endpoints of A’B’? A. A’(3, -4) and B’(5, -2) B. A’(3, 4) and B’(5, 2)

asked by Kyasia on May 24, 2010
4. ### Geometry

A segment with endpoints (3, -2) and (4, 2) is dilated to the image segment with endpoints (9, -6) and (12, 6). What is the scale factor for the dilation? 3 2 6 **my choice 9 **i feel its this one too, im stuck

asked by Jessica on March 31, 2016
5. ### geometry

which of the following is a step in constructing an inscribed square using technology? a)construct segment db, segment, bc, segment ce, segment eg, segment gi, and segment id. b)identify the points of intersection between circle a

asked by Ana on October 5, 2015
6. ### Calculus

Points (–1, 6) and (–3, 2) are endpoints of the diameter of a circle. (a) What is the exact length of the diameter? (Simplify as much as possible) Answer: ________ (b) What is the center of the circle? Answer: ____________ (c)

asked by Brian on March 10, 2012
7. ### Geometry

PLease check my answer. Which of these is a step in constructing an inscribed circle using technology? A. Construct segment DB, segment CE, segment GI, and segment ID. B. Create circle A with point B on the original circle. *** C.

8. ### Congruence-creating a triangle

Three segments are given. I need to draw one segment with the same length as any one of the given segments. Then take the measure of another given segment with my compass and draw a cirlce of that radius from the endpoint of my

asked by Jen on November 4, 2006
9. ### Math

Let A, C be the endpoints of the diameter of a circle and B an arbitrary point on the circle. Using the slopes of secant lines show that \ABC is a right angle. You can assume the circle is centered at the origin.

asked by Kole on October 2, 2012
10. ### Geometry midpoint formula

A circle on the Coordinate plane has a diameter with endpoints at (6,8) and (15,8). What are the coordinates of the center of the circle? What is the radius of the circle? Identify the coordinates of another point on the circle.

asked by Marianna on January 28, 2015

More Similar Questions