Multiple Choice Questions on If the radius of a sphere increase by 4 cm then the surface area increase by 704 cm2 The radius of t........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

If the radius of a sphere increase by 4 cm then the surface area increase by 704 cm2 The radius of t...........

Quantitative Aptitude ( CCS) Mensuration 3D
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    If the radius of a sphere increase by 4 cm then the surface area increase by 704 cm2 . The radius of the sphere initially was?

    4

    Incorrect Answer

    5

    Correct Answer

    8

    Incorrect Answer

    12

    Incorrect Answer
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    Explanation:

    Given
    4 π(r+4)2 – 4 * π*r2 = 704 
    solve and get r=5

    By: MIRZA SADDAM HUSSAIN
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