Question

The sides of a rectangle are in the ratio 4:5. Find
its sides, if the perimeter is 99 cm.
(2)​

Answer 1

Answer:

length = 22cm

breadth = 27.5 cm

Step-by-step explanation:

ratio of sides of a rectangle = 4:5

let the proportinate be x

=> the sides b = 4x and l =5x

given perimeter = 99cm

ie., 2(l+b) = 2(4x+5x) = 99cm

                => 2*9x     = 99cm

                  => 18x = 99

                  =>     x = 99/18

                              = 11/2

                              = 5.5

therefore the breadth, b = 4x cm  = 4*5.5 = 22 cm

            and the length,l = 5x cm = 5 * 5.5cm = 27.5cm