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