Maths-
General
Easy
Question
A circular track has an inside circumference of 1320 m. If the width of the track is 7m, what is the outside circumference
Hint:
Radius of outer circle is the sum of radius of inner circle and width of the track.
The correct answer is: 1364 m
It is given that Circumference of inner circle = 1320 m
2 
r = 1320
2 × 
× r = 1320
r = 210 m
Radius of outer circle = Radius of inner circle +Width of track
= 210 + 7 = 217 m
Circumference of outer circle = 2 r
= 2 × × 217
= 1364 m
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