Question

a rectangular field is 72 m by 58. Amar walk round it at the rate of 3 km per hour. what time will he take in taking 2 round

Answer 1

Answer:

10.4 minutes

Step-by-step explanation:

Given, Length of rectangular field = 72 m.

Given, breadth of rectangular field = 58 m.

Distance covered by amar in completing 1 round = Perimeter of field

We know that Perimeter of rectangular field = 2(l + b)

= 2(72 + 58)

= 2 * 130

= 260 m.

So, for 2 rounds the distance covered = 2 * 260

                                                                = 520 m

                                                                = 0.52 km.

Given that Speed with which aman walks = 3 km/hr.

∴ We know that Time = Distance/Speed

= 0.52/3

= 0.173 hours

= 0.173333 * 60 min

= 10.4 minutes.

Therefore, the time he will be taking to finish 2 rounds = 10.4 minutes.

Hope it helps!