Multiple Choice Questions on Three metal cubes whose edges measure 3cm 4cm and 5 cm respectively are melted to form a single cube........... for Punjab Patwari Exam Preparation

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Multiple Choice Questions

Three metal cubes whose edges measure 3cm 4cm and 5 cm respectively are melted to form a single cube...........

Quantitative Aptitude (Pb Patwari) Mensuration 3D
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    Three metal cubes whose edges measure 3cm, 4cm and 5 cm respectively are melted to form a single cube, find its

    15 cm

    Incorrect Answer

    12 cm

    Incorrect Answer

    6 cm

    Correct Answer

     none of these

    Incorrect Answer
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    Explanation:
    The new volume of the cube be A3
    So the volume of this cube will be equal to the sum of the volume of the 3 cubes
    a1 = 3cm     a2= 4cm     a3 = 5cm
    A3 = a13 + a23 + a33
    = 27+64+125
    = 216
    A = 6 cm

    By: Brijesh Kumar
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