Question

The length ‘$l$’ of a rectangle is $6m$ more than its breadth ‘$b$’. Write an equation for the perimeter of the rectangle in variable b if its perimeter is $30m$.

Answer 1

Given That,

Breadth of the rectangle is $b$.

The length ‘$l$’ of a rectangle is $6m$ more than its breadth ‘$b$’,

$l=6+b$

perimeter of rectangle is $30m$.

$2\left(l+b\right)=30$

$$\begin{gathered} 2\left(6+b+b\right)=30 \\ 2\left(6+2b\right)=30 \end{gathered}$$