The sides of a rectangle are in the ratio 4 : 5. Find its sides if the perimeter is 90 cm.

Question

Philoid · Accepted Answer

ABCD is a rectangle

Let the side is x

Length of rectangle = 5x

Breadth of the rectangle = 4x

Given perimeter of rectangle = 90 cm

Perimeter of the rectangle = 2(length + breadth)

90 = 2(5x + 4x)

18x = 90

x = 5

Therefore Length of the rectangle = 5×5 = 25cm

Therefore breadth of the rectangle = 4×5 = 20cm