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Math Help - volume involving a person help

  1. #1
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    volume involving a person help

    A circular pool has a diameter of 3m and is filled to a depth of 70 cm. Mr Thorpe climbs into the pool and submerges for ten seconds while his son measures the new depth at 72 cm. Calculate Mr Thorpe’s volume.
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  2. #2
    Senior Member eumyang's Avatar
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    The volume of a right circular cylinder is
    V = \pi r^2 h.

    To find the volume before Mr. Thorpe climbs into the pool, plug in r = 1.5 m and h = 0.7 m. I'll call this V1:
    V_1 = \pi (1.5)^2 (0.7) = \ldots.

    To find the volume after Mr. Thorpe submerges in the pool, plug in r = 1.5 m and h = 0.72 m. I'll call this V2:
    V_2 = \pi (1.5)^2 (0.72) = \ldots.

    To find Mr. Thorpe's volume, subtract the two volumes:
    V_2 - V_1 = \ldots

    Can you finish?
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  3. #3
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    volume involving a person

    Hi thanx for showing me working yes i can get ansewer now
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