ANSWER :
The center-radius form of the circle equation is in the format (x – h)2 + (y – k)2 = r2, with the center being at the point (h, k) and the radius being "r". This form of the equation is helpful, since you can easily find the center and the radius.
Answer:
B
Step-by-step explanation:
yeah just pick B man lol
Ok so you do 900 ÷ 10 which = 90 and 90 x 10 = 900 so the answer is 90