Multiple Choice Questions on The sector of a circle has radius of 21 cm and central angle 135o Find its perimeter ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The sector of a circle has radius of 21 cm and central angle 135o Find its perimeter ........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?

    93.5 cm

    Incorrect Answer

    91.5 cm

    Correct Answer

    90 cm

    Incorrect Answer

    95.5 cm

    Incorrect Answer
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    Explanation:

    Perimeter of the sector = length of the arc + 2(radius) 
    = (135/360 * 2 * 22/7 * 21) + 2(21) 
    = 49.5 + 42 = 91.5 cm

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