Question

a race track is in the form of a ring whose outer circumference is 660 m and Inner circumference is 616 m. find the width of the race track (take π=22/7)
solve this question by easy and simple method​

Answer 1

Answer:

The width of race track is 14m

Step-by-step Explanations :

Given : Circumference of outer ring = 660m

Circumference of inner ring = 616 m

To find : width of race track = ?

Let the outer and inner Radii of the race track be R and r Respectively ,

Then, according to given condition,

2πR = 660m.

R = 660 / 2π

= 660 × 7/22

= 210m

R = 210m

Also,

2πr = 616m

r = 616/2π

= 616 × 7/22

= 196m

r = 196m

Width of race track = R - r

= 210 - 196

= 14m

Hence the width of race track is 14m