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Math Help - surface areas and volumes

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    surface areas and volumes

    a rectangle sheet of paper 44cm*18cm,is rolled along length in the form of cylinder.find the volume of cylinder?
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    Quote Originally Posted by anjana View Post
    a rectangle sheet of paper 44cm*18cm,is rolled along length in the form of cylinder.find the volume of cylinder?
    The formula for the volume of a cylinder is
    V = (pi)r^2 * h
    where r is the radius of the end-cap and h is the height (or length) of the cylinder.

    If you roll your paper along its length (which I would take as the larger of the two dimensions) then the circumference of the end-cap will be 44 cm. Thus:
    C = 2(pi)r
    and you can find r. The height of your cylinder would then be the other dimension of the paper, 18 cm.

    -Dan
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