Question

Which equation is an equation of a circle with radius of 10 cm and center at (-3, 6)?

Answer 1

The equation for a circle is 
(x-h)^2 + (y-k)^2 = r^2
(-3,6)
-3 is h 
6 is k 

(x+3)^2 + (y-6)^2 = 10^2
10^2 = 100 

(x+3)^2 + (y-6)^2 =100
The answer is B!