Question

find the area swept by a minute hand of length 7cm in 15 minutes
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Answer 1

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25.6cm²(approx.)

length of the min hand of the clock(r)=7cm

to find:-area swept by the min hand

sol:-angle=360/60=6°

angle made in 10 min=10×6=60°

thus, area swept by the min hand=×r²×angle/360

>>>22/7×(7)²×60/360

>>>154/6

>>>25.6 cm²