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A solid sphere of diameter 15 m is melte...

A solid sphere of diameter 15 m is melted and recast into several small spheres of diameter 3 m . What is the percentage increase in the surface area of the smaller spheres over that of the larger sphere ?

A

`200%`

B

`400%`

C

`500%`

D

can't be determined

Text Solution

Verified by Experts

The correct Answer is:
B
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