Question

The ratio of length and breadth of a rectangle is 7 :
5.The prerimeter of the rectangle is 72 m. What is
the area of the rectangle?

Answer 1

Step-by-step explanation:

now the solution of this question is 315m^2

Answer 2

Step-by-step explanation:

let the length and breadth of rectangle in ratio be 7x:5x

then

perimeter of rectangle = 72m

2(l+b)= 72

2(7x+5x)=72

2×12x=72

24x=72

x=72/24

x=3

then

length=7x=7×3=21m

breadth=5x=5×3=15m

then

area of rectangle=l×b

=21×15

=315m square