SOLUTION: If the diameter of the sphere is 4 inches, what is the surface area?

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Question 422150: If the diameter of the sphere is 4 inches, what is the surface area?
Answer by MathLover1(20850) About Me  (Show Source):
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given: the diameter d of the sphere is 4 inches...=>...the radius r=d%2F2=2in
the surface area of a sphere with radius r equals A=4%28pi%29r%5E2
A=4%283.14%29%282in%29%5E2
A=4%2A3.14%2A4in%5E2
A=50.24in%5E2