Question

Find the area in square metre of a piece of cloth $1m25cm$ wide and $2m$ long.

Answer 1

Step 1: Converting the dimensions in the same unit

We know that $1m=100cm$

So, $1cm=\frac{1}{100}m$

$\therefore 25cm=\frac{25}{100}m$

$=0.25m$

It is given that, length of the cloth$=2m$

Breadth of the cloth$=1m25cm$

$=1m+0.25m$ $\left(25cm=0.25m\right)$

$=1.25m$

Step 2: Finding the area of the piece of the cloth

We know that, area of rectangle $=$length $\times$ breadth

So, area of the piece of cloth$=2m\times 1.25m$

$=2.5m^2$

Hence, area of the piece of cloth in meter square is $2.5m^2$