Question

question Number 14 : a circular Park of radius 2o cm ...........................

Answer 1

park radius = r = 20m

width of the path (w)= 5m
radius including with path = R = r+w =20+5 =25m

area of the path = π(R²-r²)

=22/7(25²-20²)
=22/7(625-400)
=22/7*225
=4950/7sqm

cost per 1sqm metalling the road = Rs14

cost = 4950/7 *14
= 4950*2
=Rs9900