Question

Perimeter is 45cm and length is 20cm find breadth​

Answer 1

Answer:

Step-by-step explanation:

Perimeter = 2(l+b) = 45cm

Length = 20cm

Let breadth be X

Therefore,

45 = 2l + 2x

45 = (2*20) + 2x

45 = 40 + 2x

45-40=2x

2x = 5

x = 5/2

x = 2.5