Question

Ranjeetha walks around the circular park in 15 minutes. If she walks at the rate of 5 km/hr, how much distance would she have to travel, at the minimum, to reach the centre of the park from any point on its perimeter?

पर्याय

• 100 meter

• 200 meter

• 250 meter

• 300 meter

Answer 1

200 meter

Explanation:

Rajneetha covers around park 2pr in 15 minutes at speed 5 km/hr

Distance covered = S × T

`=5xx15/60xx1000` m

= 1250 m

2πr = 1250 m

r`=(1250xx7)/(2xx22)`= 198.86 ≈ 200 m approx