the length of the minute hand of a clock is 2.8cm.find the area swept by it in 12 minutes
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in 60min, minute hand swept area = πr^2
= 3.14×2.8×2.8 cm^2
= 24.62 cm^2
in 1 min,.....................................= 24.62/60
= 0.41 cm^2
in 12 min,…………………………...= 0.41×12
= 4.92 cm^2
= 3.14×2.8×2.8 cm^2
= 24.62 cm^2
in 1 min,.....................................= 24.62/60
= 0.41 cm^2
in 12 min,…………………………...= 0.41×12
= 4.92 cm^2
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