Question

the length and breadth of a playground 75m 20cm and 34m 80cm respectively how will a boytake to go three times round the filed if he walkes at the rate of 1.5m per second
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Answer 1

Answer:Given length of playground = 75 m 20 cm = 75.20 m

Breadth of playground = 34 m 80 cm = 34.80 m

Perimeter of playground = 2(l + b) = 2(75.20 + 34.80) = 220 m

Since the boy took 3 rounds, distance covered = 3 x 220 = 660 m

Speed of walking = 1.5 m per sec

Recall that speed = distance/ time

Therefore, time = 660/1.5 = 440 seconds or 7.33 minutes

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