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    Question

    ┬аA hollow spherical metallic ball has an external

    diameter 8cm and is 1/2cm thick. The volume of the ball (in cm cube) is. type -ssc┬а
    A 65.52 Correct Answer Incorrect Answer
    B 88.52 Correct Answer Incorrect Answer
    C 77.12 Correct Answer Incorrect Answer
    D 36.89 Correct Answer Incorrect Answer

    Solution

    Given- Diameter = 8cm R = 4cm, r = 4-1/2=7/2 cm Volume of the ball = 4 ╧А /3[R3-r3] = (4/3) ├Ч22/7 [64-343/8] = 88/21 [(512-343)/8] = (88/21) ├Ч169/8 =1859/21 =88.52cm 3

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