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Question

The length of a minute hand of a wall clock is 10.5 cm. The area swept by it in 10 minutes would be -


A

5.77 cm2

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B

59.25 cm2

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C

57.75 cm2

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D

51.75 cm2

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E

51.25 cm2

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Solution

The correct option is C

57.75 cm2


In 60 minutes, minute hand goes one circle. 10 minutes it goes 1060=16 of circle

Required area = πr26=16×227×(10.5)2=57.75cm2


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