Question
A circular racing track has been developed in a field.
If the difference between the outer circumference and the inner circumference of the racing track is 33 m, then find the width of the track (in m). (Use π = 22/7)Solution
Let the Width of the track =r₁ – r₂. 
Difference between the outer circumference and the inner circumference=33m. 2πr – 2π r₂ = 33m 2π(r₁ – r₂) = 33 (r₁ – r₂) =21/4 =5(1/4).
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