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Find the volume of sphere whose …

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Find the volume of sphere whose surface area is 154 cm 2

    • Posted by Nisha Murali 3 years, 9 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Riya Sharma💜🤞 3 years, 9 months ago

    Answer- Let r cm be the radius of sphere.  Surface area of the sphere = 4πr2  ⇒ 154 = 4πr2  ⇒ 4 x 22/7 x r2 = 154 r2 = 154 x 7/4 x 22 = 72/22    ⇒ r = 7/2 Volume of sphere = 4/3πr3 = 4/3 x 22/7 x 7/2 x 7/2 x 7/2 cm3 = 539/3 cm3 = 179.2/3 cm3

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