Question

Circular footpath of width 2m is constructed at a rate of Rs 20 per m2 around a circular park of radius 1500 m. Find the total cost of constructed of the footpath

Answer 1

Area of circular path =
$\pi {r}^{2} + \pi {r}^{2}$
$= 22 \div 7{(1500)^{2} - {1498}^{2}$
By calculating you will get the area then take out the Rs account. To the rate