Multiple Choice Questions on A rectangular block of length 20 cm breadth 15 cm and height 10 cm is cut up into exact number of eq........... for CDS Exam Preparation

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Multiple Choice Questions

A rectangular block of length 20 cm breadth 15 cm and height 10 cm is cut up into exact number of eq...........

Quantitative Aptitude (CDS) Mensuration 3D
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    A rectangular block of length 20 cm, breadth 15 cm and height 10 cm is cut up into exact number of equal cubes. The least possible number of cubes will be

    12

    Incorrect Answer

    16

    Incorrect Answer

    20

    Incorrect Answer

    24

    Correct Answer
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    Explanation:

    HCF of 10, 15, 20 is 5
    Hence, squares are of side 5 cm
    Volume of cuboid = lbh = 20 x 15 x 10 = 3000 cm3

    No. of cubes = 3000/125 = 24

    By: Munesh Kumari
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