A racetrack is in the form of a ring whose inner circumference is 352 m and outer circumference is 396 m.Find the width and the area of the track.

Explanation

let the inner radius be`r`

let the outer radius be`R`

given `2 pi r = 352`m

`2 pi R = 396`m

subtracting the equations

`R-r= 396/(2pi)- 352/(2 pi)`

`= (396-352)/(2 pi)`

width will be `R-r = 44/(2*22/7)`

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