Posted by MathLover on Sunday, February 27, 2011 at 10:10pm.
The volume of a cylinder is 1256 meters. The height is 13 meters. Diameter is x. What is the diameter?

Math  MathMate, Sunday, February 27, 2011 at 10:28pm
Volume of cylinder, 1256 m³
= πd²h/4
h=13, π=3.14159, solve for d.

Math  Anonymous, Sunday, February 27, 2011 at 11:14pm
Idg how to to do x squared

Math  MathMate, Monday, February 28, 2011 at 12:26am
d² is the same as d*d, or d multiplied by itself.
so
πd²h/4=1256
multiply by 4 on each side,
πd²h = 5024
divide by πh on each side:
d²=5024/(13π)=123
d=√(123)=11 metres.
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