How many seconds will a boy take to run one complete round around a square field of side 78 metres, if he runs at a speed of 13 km/h?
86.4
To find the time taken, first calculate the perimeter of the square: - Perimeter = 4 × 78 = 312 metres. - Convert the speed into metres per second: 13 km/h = 13 × 1000 / 3600 = 13/3 m/s. - Time = Distance / Speed = 312 / (13/3) = 312 × 3 / 13 = 86.4 seconds.
Important Questions from Speed Time and Distance
The average speed of a train is 180% of the average speed of a car. The car covers a distance of 990 km in 15 hours. The time taken (in hours) by the train to cover the distance of 891 km is:
If Rohit can cover a distance of 1188 km in 22 hours, then what is the speed of Rohit?
A train is moving at 72 km/hrs. The distance covers in 15 minutes by the train is:
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A person crosses a 1600 m long street in 4 min. What is his speed (in km/h)?
