Question

What is the area of the rectangle if the perimeter of a rectangle is 400m and length and breadth ratio is 7:3?

​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:8400m sq.

Step-by-step explanation:

Let l be 7x and b be 3x

Perimeter= 400m

Also, P=2(l+b)

Atq, 2(7x + 3x)=400

2(10x)= 400

20x=400

x=20

Hence, l=7x= 7*20=140m

b=3x= 3*20=60m

Area= lb

=140*60

=8400m sq.