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    Ratio of the volumes of a sphere of radius 'r' and a cylinder of radius 'r' and height '2r' is:
    Question

    Ratio of the volumes of a sphere of radius 'r' and a cylinder of radius 'r' and height '2r' is:

    A.

    3 : 2

    B.

    2 : 3

    C.

    3 : 5

    D.

    5 : 4

    Correct option is B

    Given:
    Radius of sphere = r
    Radius of cylinder = r
    Height of cylinder = 2r
    Formula Used:
    Volumes of the sphere = 43π×r3\frac43 \pi \times r^3​​
    Volumes of cylinder = π×r2×h\pi\times r^2\times h​​
    Solution:

    43×πr3:πr2×2r2:3\frac{4}{3} \times \pi r^3 : \pi r^2 \times 2r \\2 : 3

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