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OpenStudy (anonymous):
The volume of a cylinder is 289 cm2 and the height is 21 cm. Find the diameter. Round the answer to the nearest whole number. A. 2 cm B. 3 cm C. 6 cm D. 4 cm
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OpenStudy (bibby):
(pi)r^2h 289cm2 = pi * r^2 * 21 Divide out pi and 21 to get r^2. Take the square roots of both sides. multiply r by 2 to get the diameter.
OpenStudy (anonymous):
I really don't understand that...
OpenStudy (bibby):
The formula for the volume of a cylinder is pi (3.14) times r squared times height pi radius^2 height D should be right. |dw:1353442406549:dw|
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