The formula for the surface area of a cylinder is A=2πr(r+h).Find h if A=80π and r=5.

Mathematics

1 answer:

lesya [120]3 years ago

3 0

A=2πr(r+h)
80π=2π(5)(5+h)
80π=10π(5+h)
80π=50π + 10πh
30π=10πh
3=h

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