Question

a circular park of radius 20 metre has a 5 metre wide road running around it find the cost of metal in the road at the rate of rupees 18.90 square metre​

Answer 1

Answer:

706.5 square m

Step-by-step explanation:

Radius of circular park r = 20 m

We are given that Circular park has road of width 5 m

Refer the attached figure

So, radius of outer circle R = 20+ 5 = 25 m

Area of road = Area of outer circle - Area of inner circle

Thus the area of road is 706.5 square m