Answer:
second option, 2826
Explanation:
formula for surface area of a sphere:
A = 4 pir^2
given: diameter = 30cm
radius: diameter / 2 -> 30 / 2 = 15cm
A = 4 pi(15)^2
A = 4 pi(225)
A = (4) x 225pi
A = 2827.43339
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