Question

pz help The
length of the minute hand of clock
is 14cm.
14cm. find the
area
swept by minute hand in 5 mins
​

Answer 1

a minute hand clock in 60 minutes makes 2π radian

in 5 minute makes (2π/60)*5=π/6 radian

let dA be small segment of area swept by small angle dθ

then,

dA=1/2r²dθ

        π/6

orA= ∫1/2*r²dθ

       0

      =1/2*(14)^2(π/6)

      = 49π/3

      51.31cm²