Question

The length of minute hand of a clock is 14 cm what will be the area covered by the minute hand in 1 minutes

Answer 1

length= 14 cm
angle= 1 min = 60/360 = 6 degree
area swept = 6/360 * 22/7 * 14 * 14
                  = 1/60*22*2*14
                  = 1/30*22*14 
                 = 1/15*22*7
                 = 154/7
               = 10.266cm²

Answer 2

area covered by
minute hand in 1 min. = 1 complete circle

dia = length of minute hand = 14 cm

then area covered = A = πr^2 ( r square )

= 3.142*(14)^2
=615.832 cm^2