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Volume and Surface Area of Solid Figures

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  1. The volume of a sphere is 88/21 x (14)3 cm3. The curved surface of this sphere is ?
    1. 2424 cm2
    2. 2446 cm2
    3. 2464 cm2
    4. 2484 cm2
Correct Option: C

∵ (4/3) x (22/7) x r3 = (88/21) x (14)3
⇒ r = 14
∴ Curved surface = 4 x (22/7) x 14 x 14 cm2 = 2464 cm2


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