SOLUTION: A cylinder has a volume of 100 (pi) cubic cm. it has a height of 4 cm. what is the length of its diameter

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Question 948437: A cylinder has a volume of 100 (pi) cubic cm. it has a height of 4 cm. what is the length of its diameter
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
For a cylinder:
Volume=pi%28r%5E2%29h
100%28pi%29cm%5E3=pi%28r%5E2%29%284+cm%29 Divide each side by 4cm%28pi%29
25cm%5E2=r%5E2 Find square root of each side
5cm=r
And diameter is 2 times the radius so:
d=2r=2(5cm)=10 cm The diameter of the cylinder is 10 cm.