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What is the surface area of a sphere of the radius 3.5 cm?

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251

{cm}^{2}

154

{cm}^{2}

186

{cm}^{2}

156

{cm}^{2}

answer is B.

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Detailed Solution

Given-

r = 3.5 cm

Total surface area of the sphere = 4 π r 2 = 4 × 227 × (3.5) 2 = 10787 = 154

Thus, the surface area of sphere is 154

c m 2

.
Hence, option 2 is the correct option.

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