Question

a rectangular field is 72 m by 58 m . Amar walks round it at the rate of 3 kilometre per hour what time will he take in taking two rounds

Answer 1

Answer:

Step-by-step explanation:

Perimeter of the field = 2(l+b)

                                        =2(72+58)

                                      = 2 ×130

                                    = 260 m²

speed of walking = 3kmph

                              = 3×1000/60

                              = 50 m/min.

Therefore total time = 260/50 min

                                    = 5.2 mins.