Question

the side of rectangle are in the ratio 5.4 if the perimeter is 22 CM the length in the lenses

Answer 1

let the length be 5x and breadth be 4x
perimeter = 2(L+B)
22 = 2(5x +4x)
22 = 18 x
x = 11 / 9

L = 5*11/9 = 55/ 9
B = 44 /9

area = L* B
= 55/ 9 * 44/9
= 2420 / 81

Answer 2

Here is your solution

Little mistake in 5:4 instead of 5.4

Given :-
The sides of a rectangle are in the ratio of 5:4

Lenght = 5x
Breadth =4x

Perimeter of rectangle = 2 (l+b)
22=>2 (5x+4x)
22=>2×9x
11=>9x
x=>11/9

Length =5x=5×11/9=55/9
Breadth =4x=4×11/9=44/9

Hope it helps you