Question

. A running track is made in the form of a circular ring whose inner circumference is
220 m and the outer circumference is 308 m. Find the width of the track. Also,
calculate the area of the running track. answer =3696m​

Answer 1

Answer:

Step-by-step explanation:

the race track is in the form of a ring whose inner circumference is 264m and outer circumference is 308m.

let the radius of the inner circumference of the ring is r and the outer circumference is R. then the width of tack must be (R - r).

so, inner circumference = 2πr = 264 m (1)

outer circumference = 2πR = 308 m (2)

subtracting equation (1) from (2),

2πR - 2πr = 308 - 264

⇒2π(R - r) = 44

⇒2 × 22/7 × width of track = 44

⇒ width of track = 44/(44/7) = 7 m