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Answer:
9.28s
Step-by-step explanation:
length = 72m
breadth = 58m
speed = 3kmph = 3 × 18 / 5 = 56ms-1
perimeter of field = 2(72+58) = 2(130) = 260m
time taken to walk around the ground = distance / speed = 260 / 56 = 4.64s
time taken to walk around the ground 2 times = 4.64 × 2 = 9.28s
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