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8 September, 10:46

Find the surface area if the hemisphere whose volume is 144 pi cubic meter

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  1. 8 September, 11:08
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    Answer: 108π m^2

    Step-by-step explanation:

    Hemisphere means half of a sphere.

    Volume of sphere = (4/3) * π*r^3, where r is radius.

    So,

    volume of hemisphere = half of the volume of sphere

    volume of hemisphere = (2/3) * π*r^3

    According to question,

    volume of hemisphere = 144π m^3

    So,

    (2/3) * π*r^3 = 144π m^3

    (2/3) * r^3 = 144 m^3

    r^3 = (144*3) / 2

    r^3 = 216

    r = 6

    Now,

    Total Surface Area of hemisphere = Curved Surface Area + Area of the Base Circle

    = 2πr^2+πr^2

    = 3πr^2

    = 3π * 6^2

    = 108π m^2
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