SOLUTION: the volume of a cylinder is 300cm cubed If the height of the cylinder is 15cm how do i calculate the radius

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Question 77784: the volume of a cylinder is 300cm cubed If the height of the cylinder is 15cm how do i calculate the radius
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
Well, we know that the volume of a cylinder is given by the formula:
V=%28pi%29r%5E2h where r is the radius and h is the height, so we have:
300=%28pi%29r%5E2%2815%29 divide both sides by 15%28pi%29
300%2F%2815%28pi%29%29=r%5E2 or
r%5E2=20%2F%28pi%29
r=%2B-sqrt%28%2820%29%2F%283.14%29%29
r=2.524 cm
Hope this helps----ptaylor