Question

Hour hand of a clock is 5 CM long. Find the area of the sector formed by this hand in 7 minutes.

Answer 1

Given: length of the hand=5cm.
To find: area of sector made in 7 min.
Sol: area of sector made in 1min.= 6°
area made in 7 min=7×6 =42°
now
area is sector made in 7min.= 42°\360°×π×r^2
area= 10cm^2 approximately