Multiple Choice Questions on The metal used in the cylinder having external radius 6 cm height 15 cm and thickness 0 25 cm is to ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The metal used in the cylinder having external radius 6 cm height 15 cm and thickness 0 25 cm is to ...........

Quantitative Aptitude ( CCS) Mensuration 3D
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    The metal used in the cylinder having external radius 6 cm, height 15 cm and thickness 0.25 cm is to be cast from a cylinder of radius 1 cm. What is the approximate height of the cylinder from which casting is to be done?

    40

    Incorrect Answer

    35

    Incorrect Answer

    55

    Incorrect Answer

    44

    Correct Answer
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    Explanation:

    Answer & Explanation
    44
    Explanation: 
    Volume of metal = (22/7)*[62 – (5.75)2]*15
    So (22/7)*12*h = (22/7)*[62 – (5.75)2]*15
    Solve, h ≈ 44

    By: MIRZA SADDAM HUSSAIN
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