20.

Mathematics
Tutor: None Selected Time limit: 1 Day

May 14th, 2015

Denote the height as h then radius will be r=2h.

The surface area is 2*pi*r*h + 2*pi*r^2 = 2*pi*(2h^2 + 4h^2) = 12*pi*h^2 = 108*pi.

So h^2 = 9, h = 3 (meters).

May 14th, 2015

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May 14th, 2015
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