Question

The length of the minute hand of a clock is 7 cm. Find the area swept by it in one hour

Answer 1

ans. angle described by the hand in 60 min=360 degree

1 hr=360/60

=36 degree.

now theta=36 degree and r=7cm

required area to swept by the hand clock in 1hr=

area of sector = 22/7. 7.7.36/360

=15.5 ans

I hope it will be correct