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Which expression gives the surface area of a sphere with radius 3x?

Which expression gives the surface area of a sphere with radius 3x?-example-1
User Bezmax
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2 Answers

14 votes
14 votes
The answer is D

Explanation
User Octachron
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9 votes

Answer:

=> 12πr²

Explanation:

The Surface area of sphere is 4πr²

so the surface area of sphere with radius 3x will be

=> 4×3πr²

=> 12πr²

User Ande Caleb
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