Posted by tdog on Thursday, March 1, 2012 at 7:14pm.
a paper towel roll is shaped like a cylinder. it is 4cm wide and 28 cm tall. find its volume to the nearest tenth. use 3.14 for pi

math  MathMate, Thursday, March 1, 2012 at 7:29pm
Volume of a cylinder
=πr²h
where r=radius of the base, h=height.
Hint:
4 cm wide means that the diameter is 4cm, so the radius is half that, or 2cm.
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