Question

(6.) The length and breadth of a rectangular field are in the ratio 7:5. If its perimeter is 192 m, find the
dimensions of the field.​

Answer 1

Answer:

l= 56m and b = 40m

Step-by-step explanation:

Perimeter : 192m

Let length be 7k and breadth be 5k.

So, 2(7k+5k) = 192m

i.e., 12k = 192/2 m

i.e., k = 96/12 m

= 8m.

Therefore, length = 7k = 7×8m = 56m and

breadth = 5× 8m = 40m.

Answer 2

Answer:

Step-by-step explanation:

Let length = 7x

Let breadth = 5x

Therefore, perimeter = 2( l + b )

2(7x + 5x) = 192m

2 * 12x = 192

24x = 192m

x=8m

Length = 7 * 8=56m

Breadth = 5 * 8 = 40m

Area = lb

        = 56*40=2240m^2