Question

The diameter of a circular park is 80 metres. A 4 m wide road runs outside around it. Find the cost of constructing
the road at 10 per sq metre.​

Answer 1

Step-by-step explanation:

radius=80/2= 40

circumference=2πr m

= 2*22/7*40 m

= 228.5 m

area of road= 228.5*4 sq m

= 514 sq m

cost= ,514*10$

= 5140$