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Math Help - volume of a frustrum

  1. #1
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    volume of a frustrum

    my question is:
    "prove that the volume of a frustrum of a sphere of height h and end radii r1 and r2 ,is 3.14h(3(r12+r22)+h2)/6."
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  2. #2
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  3. #3
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    frustrum volume

    sir,
    I have tried to get the required answer by subtracting the volume of two hemispheres from the volume of the sphere,but didn't got it. if u can please help me once more,i'll be thankful to u.
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