Question

A race track is in the form of ring whose inner circumference is 220m and outer circumference is 550m find the width of the track

Answer 1

let the inner radius = r

the outer radius =R

according to question
2× pi × r = 220
r= 35 m

2×pi× R = 550
R= 87.5

therefore width of track = R-r
= 87.5 - 35
= 52.5 m