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OpenStudy (anonymous):
A metal sphere of radius 3 cm is melted and recast into 8 equal small metal spheres. The total surface area is increased by ... ?? (in terms of pi)
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OpenStudy (anonymous):
@ageta
OpenStudy (ageta):
\[vol=\left(\begin{matrix}4*\pi*t ^{3} \\ 3\end{matrix}\right)\]
OpenStudy (anonymous):
do i need to know the radius of the small circles?
OpenStudy (ageta):
yes
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