Question

A table top measures $2m$ by $1m50cm$, what is its area in square meters?

Answer 1

Step 1: Convert all the units of the given quantities into $meters.$

$l=2m$

$\begin{array}{rcl}b& =& 1m50cm\\ & =& 1m+\frac{50}{100}m\\ & =& 1m+0.5m\\ & =& 1.5m\end{array}$ $\left[\therefore 1cm=\frac{1}{100}cm\right]$

Step 2: Find the area of the table top.

The table top is in the form of a rectangle

Therefore,the area of the table top $=l\times b$

$$\begin{gathered} =2\times 1.5 \\ =3m^2 \end{gathered}$$

Hence, the area of the given table top is equal to $3m^2$