Given Data:
The radius of the circle is, r = 18 cm.
The expression for calculating the area of a circle with radius r is given by,
[tex]\begin{gathered} A=\pi\times r^2 \\ \pi=3.14 \end{gathered}[/tex]Therefore, substituting the value of r, we get,
[tex]A=3.14\times18^2=3.14\times324=1017.36[/tex]Thus, the area is 1017.36 cm2.
The square of 18 can be calculated as,
[tex]18^2=18\times18=324[/tex]