A cylinder has a height of 12cm.

The circumference of the cylinder is 20π cm.
Calculate the volume of the cylinder in terms of π.

My maths teacher asked this so pls can u help cause its my Mock GCSE test.
Cheers! :D

2 answers

since C = 2πr = 20π that means
r = C/2π = 20π/2π = 10

Now Just use your formula: v = πr^2 h
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