Question

77 99. The minute hand of an alarm clock is 3.5 cm long. Calculate the area swept by it in 20 min.
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Answer 1

Step-by-step explanation:

refer to the given attachment

hence the correct answer is 5.5cm²

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Answer 2

Step-by-step explanation:

area of sector = 22/7×12.25×120/360( because 5min in arm clock 30°)

=22×1.75×1/3

= 38.5/3

= 12.83cm^2

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