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How much time (in minutes) will a dog take to run around a square field of side 75 m if it runs at the rate of 6 km/hr?
1. 1.8
2. 3.6
3. 2.5
4. 3

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Correct Answer - Option 4 : 3

Given:

Square of side = 75 m

And a dog runs around the square with a speed of = 6 km/hr

Formula Used:

The perimeter of a square = 4 × side of the given square

Calculation:

⇒ Speed of the dog in m/sec = 6 × 1000/3600 = 6× 5/18 = 5/3 m/sec

⇒ The perimeter of the Square = 4 × 75 m = 300 m

⇒ Time = Distance/speed

Hence, Time is taken by the dog to travel around the square

⇒ Time = (300)/(5/3) = 60 × 3 seconds or (60 × 3)/60 = 3 minutes

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