How long will a boy take to run round a square field of side 35 meters, If he runs at the rate of 9 km/hr? A. 50 sec B. 52 sec C. 54 sec D. 56 sec Answer Workspace Report Discuss Answer with explanation Answer: Option D Explanation Speed = 9 km/hr = 9 x (5/18) m/sec = 5/2 m/sec Distance = (35 x 4) m = 140 m. Time taken = 140 x (2/5) sec= 56 sec Workspace
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