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Question

Length of minute hand of clock is 5 cm. Find area by minute hand during 6:05 am and 6:40 am.

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Solution

R.E.F image
If 2π angle is made from one revolution i.e.60 minute
60 min =2π
35 min =2π60×35=7π5=7×1805
=252
length of minute hand or radius =5cm
Area of the sector =12r2θ=12×5×5×252
=25×126
=3150cm2

1156366_1276772_ans_4e193de858a147398c9912d619623c1a.png

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