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Deepak Bora
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If the total surface area of a solid hemisphere is 462 cm² , then find its volume

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surface area of a solid hemisphere is given in the problem by using relation of volume and surface area find the volume of hemisphere. Question from RS Aggarwal book. Exercise 17A.

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  1. Total surface area of hemisphere = 3 × π × r²

    Total surface area of hemisphere = 3 × 22/7 × r²

    We are given that the total surface area of a solid hemisphere is 462 cm².

    3 × 22/7 × r² = 462

    ∴ Radius of hemisphere is 7 cm.

    Volume of hemisphere = 2/3 × π × r³

    = 2/3 × 22/7 × 7³

    ∴ Volume of hemisphere is

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