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  1. If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in cm2) is?
  2. A.
    100Ï€
    B.
    7Ï€
    C.
    60Ï€
    D.
    50Ï€

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    Answer : Option A

    Explanation :

    4/3 π * 10 * 10 * 10 = 8 * 4/3 πr3

    r = 5

    4Ï€ * 5 * 5 = 100Ï€


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