Question

sovle the questions no. 11 ​

Answer 1

Step-by-step explanation:

given

sides of the rectangle is 5x, 4x

perimeter of the rectangle =2[length+breadth]

72=2[5x+4x]

36=9x

x=4cm

sides if the rectangle is

5x=5*4=20cm

4x=4*4=16cm

Answer 2

Step-by-step explanation:

let, the length=5x cm

and breadth=4x cm

perimeter=2(l+b)

72=2(5x+4x)

72=2(9x)

72=18x

x=72/18

=4

So, length=5×4=20 cm

and breadth=4×4=16 cm