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Which expression is NOT equal to the perimeter of a rectangle with length l and breadth b?

Class 7Formulas and Rules from PatternsAlgebra

A $2 (l + b)$
B $2 l + 2 b$
Cl + b + l + b
D $2 l + b$

Step-by-Step Solution

Perimeter =

l + b + l + b = 2 l + 2 b = 2 (l + b)

. The expression

2 l + b

leaves out one breadth.

Answer: D)

2 l + b

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