Asked by Diana

Find r if T.A=12Pi and L.A =8Pi
Answered by Damon
Whatever language you are speaking I am not familiar with it.
Answered by Steve
sounds like a cylinder.

2πr^2 + 2πrh = 12π
2πrh = 8π, so
2πr^2 + 8π = 12π
2πr^2 = 4π
r^2 = 2
r = √2

and r = √6
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