Multiple Choice Questions on A hollow cylindrical tube open at both ends is made of plastic 4 cm thick If the external diameter b........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A hollow cylindrical tube open at both ends is made of plastic 4 cm thick If the external diameter b...........

Quantitative Aptitude ( CCS) Mensuration 3D
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    A hollow cylindrical tube open at both ends is made of plastic 4 cm thick. If the external diameter be 54 cm and the length of the tube be 490 cm, find the volume of plastic.

    320000 cm³

    Incorrect Answer

    340000 cm³

    Incorrect Answer

    306300 cm³

    Incorrect Answer

    308000 cm³

    Correct Answer
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    Explanation:

    External Radius = 27; Internal Radius = 23
    Volume of Plastic = πh(R² – r²) = 22/7 * 490(27² – 23²)
    = 308000 cm³

    By: Amit Kumar
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