Question

If $P$ denotes perimeter of a rectangle, $l$ denotes its length and $b$ denotes its breadth, find:
$b$, If $P=3.2m$ and $l=100cm$

Answer 1

Step: Finding the breadth

We have:
Perimeter of the rectangle $\left(P\right)=3.2m$ and
Length of the rectangle $\left(l\right)=100cm$
$\because 100cm=1m$

The perimeter of the rectangle is given by:
$P=2(Length+Breadth)$
$3.2=2(1+b)$
$3.2=2+2\times b$
$3.2-2=2\times b$
$1.2=2\times b$
$b=\frac{1.2}{2}=0.6m$

Therefore, the breadth of the given rectangle is $0.6m$.