Step-by-step explanation: length = 20 cm breadth = ? Perimeter of rectangle = 240 cm 2 (l+b) = 240 l + b = 240/2 20 + b = 120 b = 120 – 20 hence, b = 100 cm Reply

Step-by-step explanation:length = 20 cm

breadth = ?

Perimeter of rectangle = 240 cm

2 (l+b) = 240

l + b = 240/2

20 + b = 120

b = 120 – 20

hence, b = 100 cm