Question

A racing track is a circular ring with inner diameter 140 m and track 7 m wide how much further does motorist on the outside rim travel when he goes round the circuit once than another who goes round the circuit on the side rim

Answer 1

Given that the path is 7 M, the diameter of the outside rim is :

140 + (7 × 2) = 154M

The circumference of the outer rim is :

22/7 × 154 = 484meters

The circumference of the inside rim:

22/7 × 140 = 440 meters
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484 - 440 = 44 meters