Question

A circle has a center at (5, 5) and a radius of 2. If the format of the equation for the circle is (x − h)2 + (y − k)2 = r2, then what is r2?

Select one:
A. 1
B. 2
C. 3
D. 4
E. 5

Answer 1

D: r^2 = 4

Explanation:

Square the radius: r^2 = 2^2 = 4 (answer)