Question

A race track is in the form of a ring whose inner circumference is 352 m, and the outer circumference us 396 m. Find the width of the track . ( with figure)

Answer 1

iner circumference=352m
2pi.r=352
2x22/7xr=352
r=56m
outer circumference=396m
2pi.R=396
2x22/7xR=396
R=63m
so width of track=(63-56)=7m