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An inner tube for a bicycle has a diameter of 2 inches and measures about 82 inches along its circumference. What formula would you use to determine the numbers of cubic inches of air the inner tube can hold

  • Math -

    What you are asking for is the volume of a torus, which is quite a complicated problem.
    What grade level would this be?

    If you want an approximation ....

    Assume we cut the tube and stretch it into a long cylinder.
    The the volume would be π(1^2)(82 = 82π
    or appr. 578 cubic inches.

    Is this answer sufficient?

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