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    5. Find the radius of a sphere having a surface area of 900 π  сm².

    Question

    Find the radius of a sphere having a surface area of

    900 π  сm².
    A 18 cm Correct Answer Incorrect Answer
    B 20 cm Correct Answer Incorrect Answer
    C 15 cm Correct Answer Incorrect Answer
    D 12 cm Correct Answer Incorrect Answer

    Solution

    Surface area of the sphere =900 п 4π r ²  = 900  п r ²  =900/4=225 r =15cm.

    Practice Next
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    Relevant for Exams:

    • RRB NTPC

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