MATHS MONGU COLLEGE

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A cylinder whose volume is 386,000m3 has it's length 1.3 times its diameter. calculate the diameter of the cylinder given that the volume V = 3.142r2h.

  • MATHS MONGU COLLEGE -

    v = πr^2 h
    Just plug in the known values
    386000 = π r^2 (1.3*2r) = 2.6π r^3
    r^3 = 386000 / 2.6π
    r = 36.15, so
    d = 72.30

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