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The inner circumference of a circular race track, 14m wide is 440m. Find the radius of the outer circle.

Correct Answer: 84m

Explanation:

let inner radius be r meters. 


2 πr = 440 r = 440 × 7 44 = 70 m radius   of   outer   circle   = 70 + 14 m   


 


Therefore, Radius of outer circle = 70 + 14 = 84m


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