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  • Perplex
    IB Math AIHL
    /
    2D & 3D Geometry
    /

    Problem Bank

    [Maximum mark: 9]

    A right cone with slant length ​5cm​ and diameter ​8cm​ is placed with its vertex pointed straight down, and filled with water to a depth of ​h.

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    1. Show that the volume of water in the cone is ​V=2716πh3​.

      [4]

    Water is being added to the cone at a rate of ​3cm3/s.

    1. Find the rate at which ​h​ is increasing when ​V=15cm3.

      [5]

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