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Deepak Bora
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The height of a cone is 15 cm. If its volume is 1570 cm square , find the radius of the base. (Use pi = 3.14)

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This is the Important question of class 10 Based on Mensuration Chapter of M.L Aggarwal book for ICSE BOARD.
In this question height of a cone and its volume is given , find the radius of the base.
This is the Question Number 09, Exercise 17.2 of M.L Aggarwal.

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1 Answer

  1. Given height of a cone, h = 15 cm

    Volume of the cone = 1570 cm3

    (1/3)r2h = 1570

    (1/3)3.14 ×r2×15 = 1570

    5 ×3.14×r2 = 1570

    r2 = 1570/5×3.14 = 314/3.14 = 100

    r = 10

    Hence the radius of the cone is 10 cm.

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