Question

27.
The ratio between length and breadth of
rectangulare field is 3.1. A boy runs at 4 km
per hour around the field. He completes a rounds
in 6 min. find the area of the field?​

Answer 1

Answer:

27 km sq

Step-by-step explanation:

Distance = Time x Speed

= 6 x 4

= 24 km = Perimeter

Length and Breadth sum should be half of perimeter

So 12 km should be the sum of length and breadth.

The ratio of length to breadth is 3 to 1

Sum of ratios = 4

One ratio = 12/4

= 3

So the length is 3 x 3

= 9

So the breadth is 3 x 1

= 3

Area = l x b

9 x 3

= 27 km sq