Multiple Choice Questions on A rectangular courtyard 3 78 metres long and 5 25 metres wide is to be paved exactly with squa........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A rectangular courtyard 3 78 metres long and 5 25 metres wide is to be paved exactly with squa...........

Quantitative Aptitude ( CCS) Mensuration 2D
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     A rectangular courtyard 3.78 metres long and 5.25 metres wide is to be paved exactly with square tiles, all of the same size. What is the largest size of the tile which could be used for the purpose ?

    14 cms

    Incorrect Answer

    21 cms

    Correct Answer

    42 cms

    Incorrect Answer

    None of these

    Incorrect Answer
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    Explanation:

    3.78 meters = 378 cm = 2 × 3 × 3 × 3 × 7

    5.25 meters = 525 cm = 5 × 5 × 3 × 7

    Hence common factors are 3 and 7

    Hence HCF = 3 × 7 = 21

    Hence largest size of square tiles that can be paved exactly with square tiles is 21 cm.

    By: MIRZA SADDAM HUSSAIN
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