Multiple Choice Questions on Eight metallic balls of one centimetre radius each are melted into one ball The diameter o........... for CAPF (AC) Exam Preparation

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Multiple Choice Questions

Eight metallic balls of one centimetre radius each are melted into one ball The diameter o...........

Quantitative Aptitude( Paper-I ) Mensuration 3D
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    Eight metallic balls of one centimetre   radius each are melted into one ball. The diameter of the new ball is
    This questions was previously asked in
    CAPF 2021 Paper-1
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    2 cm

    Incorrect Answer

    6 cm

    Incorrect Answer

    4 cm

    Correct Answer

    1 cm

    Incorrect Answer
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    Explanation:

    4 cm

    • Ball is a spherical shape, so volume of 8 melted balls is equal to new ball.
    • Volume of sphere=4/3*π*(radius)3 
    • 8*4/3*π*(1)3= 4/3*π*x3
    • x=2cm, radius= 2, so diameter= 4 cm

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