Question:The inner circumference of a circular race track, 14 m wide, is 440 m. Find the radius of the outer circle.
Answer Let inner radius be r metres. Then,` 2πr = 440 => r = (440 xx 7/44) = 70 m.` :. Radius of outer circle` = (70 + 14) m` `= 84 m`
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The inner circumference of a circular race track, 14 m wide, is 440 m. Find the radius of the outer circle.