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What is the surface area of a sphere of the radius 2.5 cm?

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78.17 c m 2

78.27 c m 2

78.47 c m 2

78.57 c m 2

answer is D.

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Detailed Solution

Given-

r = 2.5 c m

Area of a sphere = 4 π r 2 = 4227 (2.5) 2 = 5507 = 78.57

Thus, the surface area of sphere is

78.57 c m 2

.
Hence, option 4 is the correct option.

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