math

A 40m deep well with radius 3.5m is dug and the earth taken out is evenly spread to form a plat form of dimension 28m by 22m. Find the height of the platform.

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  1. divide the volume by the base area to get
    (40*pi*3.5^2)/(28*22) = 35/44 pi or 2.5

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    posted by Steve

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