calculate the distance travelled in 30 sec by the tic of second's hand of a clock of length 7cm in SI unit
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Actually the question is asking the area of sector of a circle .
So Area swept = π×r ²×10/60=77/3 cm²
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here distance covered means nothing but length of an arc means we should apply formula here
length of an arc=(180÷360)×2×(22÷7)×7
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