Answer :- 
Given :- 
- Ratio of two Sides of Parallelogram ( Length and breadth) =  5 : 3
- Perimeter of the parallelogram = 48cm
To Find :- 
- Length of each side of the parallelogram
Formula :- 
Perimeter of the parallelogram = 2( length + breadth)
Solution :- 
Let the length and breadth be 5x and 3x
2(5x + 3x) = 48cm
2(8x) = 48cm
x = 48/16 
x = 3cm
Length = 5x = 5×3cm = 15cm
Breadth = 3x = 3×3cm = 9cm
We know that, 
In parallelogram Opposite sides are equal
Hence, The sides of the Parallelogram are 15cm, 9cm, 15cm and 9cm