Answer:
Step-by-step explanation:
The circumference of a circle = 2*pi * r
so 16 pi yards = 2 * pi * r
Divide both sides by 2
16 pi/2 = 2*pi * r /2
8*pi = pi * r
Divide both sides by pi
8 * pi / pi = pi * r / pi
r = 8
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Surface Area = 4 pi * r^2
r = 8
Surface Area = 4 * pi * 64
Surface Area = 256 * pi
