Question 1112915
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?
It's the midpoint.
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b. What is the length of the radius?
1/2 the distance between the 2 points.
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c. What is the circumference of the circle?
{{{C = pi*d = 2pi*r}}}
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d. What is the equation of the circle?
{{{(x-h)^2 + (y-k)^2 = r^2}}} where (h,k) is the center.
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PS  Tutoring is not doing it for you.
It's showing you how to do it.