Question

The inner circumference of a circular park is 220 m. The park is 7.5 m wide every where. Calculate the cost of
putting up a fence along the outer circle at the rate of 4 per meter. Also find the area of park. Find the cost of
levelling the park if the cost of levelling per m is 8​

Answer 1

Hello ❤️

Given:

Circumference= 2 πr

220m = 2 ×22/7 × r

r = 220 ×7/2×22

= 35m

Width of the park= 7.5

The sum of the outer and inner radius

= (35 +7.5)

= 42.5m

The cost of fencing 1m fence = 4 rs

The cost of fencing inner and outer of the circle

Rs ( 42.5×4)

Rs= 170.0

Rs =170

The area of the park = πr²

22/7 × 35 × 35

= 3850m²

The cost of levelling 1m 2 = 8 rs

The cost of levelling the park

rs = (3850×8)

rs=30,800

Hope it will help you ☺️