Al rectangular field measured 290 metres by 210 meter. How long will it take for a girl to go 2 times round the field if he walks at the rate of 1.5 metre per second.
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length of rectanguar field = 290 metres
breadth of a rectangular field = 210metres
perimetre of rectangular field is = 2(l+b)
=2(290+210)
=2(500)
=1000metres.
The girl has to cover 1000M
the girl took time per 1 sec =1.5 metres
SPEED = DISTANCE / TIME
TIME = 1000/1.5
= 667 SEC
= 11 MIN
∴THE ANSWER IS : 667 SEC (OR) 11 MIN
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