Question

the ratio beyween the length and breadth of a rectangular field is 5:4 if the breadth is 20 mless than the length the perimeter of the field is

Answer 1

Let the length and breadth be=5x and 4x

Breadth= 20 m less than length

4x=5x-20

20=5x-4x

20=x

The value of x= 20

Length=5x= 5*20=100m

Breadth=4x=4*20=80m

Formula of perimeter of rectangle =2*(L+B)

L=100m &B=80 m

So, 2*(100+80)

2*180

360 m square.

Thus , perimeter of rectangle=360 m square

Answer 2

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