The area of a circle is given by the formula:
[tex]A=\pi\times r^2[/tex]
where r is the radius of the circle since for this case we can take pi as 3 and the radius of the circle is 10 cm, by replacing these values in the formula we get:
[tex]\begin{gathered} A=\pi\times r^2 \\ A=3\times10^2=3\times100=300 \end{gathered}[/tex]
Then, the area of this circle is 300 cm^2
