Question

The inner circumference of a circular track is 220 m. The track is 7.5m wide everywhere. calculate the cost of putting up a fence along the outer circle at the rate of Rs.4 per m. also find the area of track. find the cost of levelling the track if the cost of levelling per m square is Rs8​

Answer 1

Answer:

Step-by-step explanation:

inner circumference = 220

2 π r = 220

r *2* 22 = 220 * 7

r = 35 m [ inner radius ]

inner radius , r₁ = 35 m

outer radius , r₂ = 35 + 7 = 42 m

outer circumference = 2 π r ₂

= 2 * ( 22 / 7 ) * 42 = 264 m

Cost of fencing = Rs 2 * 264 = Rs 528

Click to let others know, how helpful is it

Read more

thanks