A rectangular feild is72m by 58m amar walks round it at the rote of3km per hour . What time will he take in taking 2 rounds
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perimeter of rectangle=2(72+58)
=144+116
=260m.
Time taken in 2 round=260×2
=540m
Distance=54000km
speed=3km per hour
time taken=54000÷3
18000km per hour
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