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    Question

    Steel is used to make a hemispherical bowl that is 0.37

    cm thick. The bow's inner radius is 6 cm. Find the bowl's outside curved surface.
    A 255.05 Correct Answer Incorrect Answer
    B 240.35 Correct Answer Incorrect Answer
    C 225.25 Correct Answer Incorrect Answer
    D 175.35 Correct Answer Incorrect Answer

    Solution

    Let the internal radius of the bowl =r, and outside =R Thick =R-r 0.37cm =R-6 R=6.37cm. The curved surface of the hemispherical bowl =2 πR2 =2×22/7×6.37×6.37 =255.05cm2

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