Question

The inner circumference of a circular track is 264 m. The track is 7m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of Rs. 9 per meter. Also find the area of the track.

Answer 1

Answer:

42 m

Step-by-step explanation:

2πr = 264 m

r = 264 × 7 / 2 × 22 m

r = 6 × 7 m

r = 42 m

So, R = 49 m

Area of track = 22/7 × (49^2 - 42^2)

= 22/7 × 91 × 7

= 22 × 91

= 2002 m^2

Hope it helps.