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who cares asked in Science & MathematicsMathematics · 1 decade ago

Math Carpet Question?

Is there a formula that you can tell how many feet are on a roll of Carpet without having to unroll and measure it?

2 Answers

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  • M3
    Lv 7
    1 decade ago
    Favorite Answer

    1. assume d carpet is so tightly rolled dat it can b treated

    as a right circular cylinder

    2. let the radius of this rolled carpet be R & width W,

    then volume V = pi*R^2*W

    3. measure thickness of carpet accurately, say = t

    then V = W*t*L

    4 equating the two, W*t*L = pi*R^2*W

    or L = pi*R^2 / t

    u don't hv 2 measure d width, only R & t

    [ actually, better 2 measure D & use R = D/2 ]

    happy new year !!!

  • GJ
    1 decade ago

    I'm sure you could figure it out, but it would depend on a lot of variables (i.e. total diameter of roll, width of carpet, etc). Would probably be much easier to unroll it in all honesty.

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