Question

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.

Answer 1

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