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Can you please help me
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22 votes
22 votes
Can you please help me

User XTMNTxRaphaelx
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1 Answer

23 votes
23 votes

The figure given is a sphere

A surface area of a sphere is given by


A=4\pi r^2

The diameter of the sphere is given to be 42 cm

The radius of the sphere is half the diameter =


r=(42)/(2)=21\operatorname{cm}

Substituting the value of r into the formula


\begin{gathered} A=4*\pi*21^2 \\ A=5541.8\operatorname{cm}^2 \end{gathered}

The correct answer is option A

User Surckarter
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