Please help me is for my geometry

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asked Jan 4, 2018 209k views

1 Answer

Neam · Answer 1 · 2018-01-09T16:31:58+0000

the formula for surface area is SA=4pi(radius)^2
This means that 4SA=4pi(2r)^2
because 2^2=4
so multiply the first ball's surface area by 4
the answer is c

Please help me is for my geometry

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