Width = 10cm
Length = 25cm
Explanation:
Given, width:length = 2:5
Let width = 2x ,
So, length = 5x
Perimeter of rectangle = 2x(length + width)
According to the question,
[tex]70cm = 2X(5x + 2x)\\70cm = 2X(7x)\\35cm = 7x\\x = 5cm[/tex]
Hence,
Width = 10cm
Length = 25cm
