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    Question

    12 spheres of the same size are made by melting a solid

    cylinder of 12cm diameter and 12cm height. The Diameter of each sphere is.
    A 6cm Correct Answer Incorrect Answer
    B 8cm Correct Answer Incorrect Answer
    C 9cm Correct Answer Incorrect Answer
    D 4cm Correct Answer Incorrect Answer

    Solution

    Diameter =12cm, r = 6cm Volume of 12 spheres = Volume of cylinder 12├Ч4/3├Ч ╧АR3 = ╧А ├Ч82├Ч2 R3 = (36 ├Ч12├Ч3)/12├Ч4 =27cm r= 3cm. Diameter = 2├Ч3 =6cm

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