Question

A rectangular board is 1400 millimeters long and 900 millimeter wide

Answer 1

In order to find the area in square meters, first convert the length and width to meters:

`\begin{gathered} l:1400mm*(1m)/(1000mm)=1.4m \\ w:900mm*(1m)/(1000mm)=0.9m \end{gathered}`

then, find the area of the board through the formula:

`\begin{gathered} A=l* w \\ A=1.4m*0.9m \\ A=1.26m^2 \end{gathered}`

Answer:

The area of the board is:

`A=1.26m^2`