The area of rectangular field is 3584m^2 and its length is 64 m . A girl runs around the field at the rate of 8km/hr . How long will she take to go 5 times around it?
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ATQ. : breadth of the field = 3584/64 =56 m
hence perimeter = 2(64+56) = 240 m
therefore the total distance covered to run around the field 5 times = 240*5 = 1200 m
speed of the girl = 8km/hr = 20/9 m/sec
hence the reqd. time is = 1200 *9/20 =540 sec = 9 minute
hence perimeter = 2(64+56) = 240 m
therefore the total distance covered to run around the field 5 times = 240*5 = 1200 m
speed of the girl = 8km/hr = 20/9 m/sec
hence the reqd. time is = 1200 *9/20 =540 sec = 9 minute
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