Question

What is the area of a square in $m^2$ with perimeter $128cm?$

Answer 1

The perimeter of the square $=4\times side$

$$\begin{gathered} 128=4\times side \\ Side=\frac{128}{4} \\ Side=32 \end{gathered}$$

So the side of the square $=32cm=0.32m$

Hence the area of square $=side\times side$

$$\begin{gathered} =0.32\times 0.32 \\ =0.1024 \end{gathered}$$

Hence, the area of square is $0.1024m^2$