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Question

The length of the minute hand of a clock is 14 cm. Find the area in cm2 swept by the minute hand in 5 minutes.


A

51.3

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B

55.1

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C

60.2

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D

70.8

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Solution

The correct option is A

51.3


5 minutes corresponds to 30.

Radius = 14 cm.
Area of a sector = θ360×π×r2

Area = 30360 × 3.14 × 142 = 51.31 cm2.


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