Question

the length and breadth of a rectangle are in ratio 7 : 3 if its perimeter is 120 cm find its length and breadth​

Answer 1

Answer:

Step-by-step explanation:

Let the length of rectangle 7 x and breadth 3 x

perimeter = 120 cm

perimeter of rectangle = 2 ( l + b )

120 = 2 ( 7x + 3x )

120 = 2 X 10x

120 = 20 x

or

20x = 120

x = 120/20

x = 6 cm

Length = 7X6 = 42 cm

Breadth = 3 X6 = 18 cm