Answer:
30/pi cm
Step-by-step explanation:
2×pi×r =60
r = 60/2×pi =30/pi
1. (chain rule)
2
base = 3*3 = 9 sq. in.
side = 1/2 *3*6 = 9 sq. in.
4 sides x 9 = 36 + 9 (base) = 45 in^2
Answer is A