Question

The length of minute hand of a clock is 14 cm .find the area swept by minute hand in 5minute

Answer 1

Answer:

swept by minute hand in 60 minutes = 360 degree

in 1 minute swept = 360/60 = 6

in 5 minutes swept = 6×5= 30 degree

Now area swept by minute hand in 5 minutes

= pie r^2 × pie/6) / 2pie

= r^2 pie/ 12

= 196 × 3.14/12 = 51.28 cm^2