Question

find answer
....................​

Answer 1

Answer:

First, Perimeter = 2(l + b)

=> 144 = 2(l +b)

=> l + b = 144/2 = 72

Given: l - b = 12 --------(i)

l + b = 72 -------(ii)

On adding (i) and (ii),

l + l + b - b = 12 + 72

=> 2l = 84

=> l = 84/2 = 42

l - b = 12

b = l - 12 = 42 - 12 = 30

Therefore the dimensions are : Length = 42m & Breadth = 30m