Algebra

a cylindrical water tank has a volume of 20π cubic feet . the height of the tank is 1 foot more than 2 times of its radius . find the radius and height of the tank

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  1. pi r^2 (2r+1) = 20pi
    2r^3 + r^2 - 20 = 0
    r = 2
    I guess you can probably figure out what h is, no?

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