Question

The inner circumference of a circular track is 176 m, the track is 7m wide : Calculate the : (a) area of the treck. (B) Cost of pitying up a fence along the outer circle at the rate of 12 Rs per metre .

Answer 1

Circumference of a circular track is 176 cm. wide 7m
so, 2πr=176
r=176/2π
=88/π
area=πr^2
=π×88^2/π^2
=88^2/π