Question

If the adjacent sides of a rectangle are 4a + 7b and 3b - a , Find it's perimeter​

Answer 1

2(l+b)

2(4a+7b+3b-a)

2(3a+10b)

6a+20b

Answer 2

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Perimeter=2(l+b)

=2(3a−b+6b−a)

=2(5b+2a)

=10b+4a