Area of rectangular sheet = 500 cm
Length (l) = 25 cm
Area of rectangle sheet = l x b (where b = breadth of sheet)
∴ breadth (b) = Area/Length = 500/25 = 20 cm
Perimeter of rectangular sheet
= 2 x (l + b)
= 2 x (25 + 20) cm
= 90 cm
So breadth of sheet is 20 cm and its perimeter is 90 cm.