Question

the perimeter of a rectangular field is 480 metre if the ratio of its length to that of its breadth is 7.5 find its dimension​

Answer 1

Answer:

140m,100m

Step-by-step explanation:

Length:Breadth= 7:5

Let length be 7x and breadth be 5x.

So 2 (l+b)= Perimeter of the rectangle.

2 (7x+5x)=480 metres

2 (12x)=480 metres

24x=480

x=480/24

x=20

Therefore, the dimensions are 7×20,5×20.

Length=140m, Breadth=100m

HOPE THIS HELPS YOU!!

PLEASE MARK BRAINLIEST!!

Answer 2

Answer:

Length and breadth = 7x and5x

As we know that

P = 2 x ( l + b)

480 = 2 x 12x

12x = 240

X = 20

Since l = 7x

= 7x20

= 140

And b = 5x

= 5 x 20

= 100