Question

a rectangular field is 72 m by 58 m amar walks round it at the rate of 3 km per hour. what time will he take in taking 2 rounds? answer is 10 min 24 sec how?​

Answer 1

Answer:

Step-by-step explanation:

Given :-

Length of rectangular field = 72 m

Breadth of rectangular field = 58 m

To Find :-

Total time taken by Amar to cover the Distance

Formula to be used :-

Perimeter = 2(l + b)

Time taken = Distance/Speed

Solution :-

Putting all the values, we get

Perimeter of the rectangular field = 2(l + b)

Perimeter of the rectangular field = 2× (72 + 58)

Perimeter of the rectangular field = 2 × 130

Perimeter of the rectangular field =  260 cm

Distance covered in two rounds = 2 × 260 m  = 520 m

Speed in Two rounds = 3 km/hr  = 5/6 m/sec

Time taken = Distance/Speed

Time taken = 520 × 6/5

Time taken = 624 sec

Time taken = 10 minutes 24 sec

Hence, 10 minutes 24 sec take in taking 2 rounds.

Answer 2

Answer:

10min 24sec

Step-by-step explanation:

perimeter of rectangle =2(l+b)

distance

time=-------------

speed