Question

the two adjacent sides of a rectangle are 3a-b and 6b-a. it's perimeter is

Answer 1

Hiiii.....

Here is answer.....

Permeter = 2 ( a + b )

P = 2 ( 3a - b + 6b - a ) ....

P = 2 ( 2a + 5b ) ....

P = 10b + 4a ....

Answer 2

2(6b-a+3a-b)
=2(5b+2a)
=10b+4a