:›»› The length and breadth of a RECTANGLE are 25 and 20 cm.Given :The sides of a rectangle are in the ratio 5:4 and its perimeter is 90 cm.To Find :The length of the rectangle.The breadth of the rectangle.Solution :The sides of a rectangle are in the ratio 5:4, i.e, the length and breadth of a rectangle are in the ratio 5:5.Let, us assume that the length of a rectangle is 5x cm and the breadth of a rectangle is 4x cm respectively.As we know that→ Perimeter of rectangle = 2(l + b)→ 90 = 2(5x + 4x)→ 90 = 2(9x)→ 90 = 18x→ x = 90/18→ x = 5Therefore,→ The length of rectangle = 5x→ The length of rectangle = 5 * 5→ The length of rectangle = 25 cm→ The breadth of rectangle = 4x→ The breadth of rectangle = 4 * 5→ The breadth of rectangle = 20 cm║Hence, the length and breadth of a rectangle are 25 and 20 cm.║Verification :→ Perimeter of rectangle = 2(l + b)→ 90 = 2(25 + 20)→ 90 = 2(45)→ 90 = 90Here, LHS = RHSHence Verified !LEARN more :1. the length and breadth of a rectangle are 10 centimetre and 8 centimetre find its perimeter if the length and breadth do... brainly.in/question/272556502. find the area of rectangle whose DIMENSION are length 25.5m breadth 12M brainly.in/question/27232012