Question

With his usual speed, if a person covers a circular track of radius 150 m in 9 minutes, find the distance that he covers in 3 minutes ( π = 3 14)​

Answer 1

Radius of the circular track = 150m

Distance covers in 9 minutes = Perimeter of the circle

= 2 × π × r units

Distance covered in 9 min = 2 × 3.14 × 150 m

= 2×3.14×150/9m (cancel and simplify)

=314

Therefore Distance he covers in 3 min = 314 m

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Answer 2

Answer:

Distance covers in 9 minutes = Perimeter of the circle = 2 × π × r units

Distance covered in 9 min = 2 × 3.14 × 150 m

Distance covered in 1 min = 2 × 3.14 × 150 m / 9

Distance covered in 3mins = 2 × 3.14 × 150 m × 3/ 9

Distance he covers in 3 min = 314 m.