Question

Write in the form of an algebraic expression:​
(i) Perimeter ($P$) of a rectangle is two times the sum of its length ($l$) and its breadth ($b$)​.

Answer 1

(i)Given:

$\text{Length of the rectangle}=l$

$\text{Breadth of the rectangle}=b$

$\text{Perimeter of the rectangle}=P$

$\text{Sum of length and breadth}=l+b$

$\text{Perimeter of a rectangle}=2(\text{Length +Breadth}$)

$\Rightarrow$ $P=2(l+b)$

Hence, the required expression is $P=2(l+b)$ .