Question

the radius of a ciecle is 13 cm. find its área to the nearest tenth

Answer 1

Given data:

The given radius of the circle is r=13 cm.

The expression for the area of the circle is,

$A=\pi(r)^2$

Substitute the given value in the above expression.

$\begin{gathered} A=\pi(13cm)^2 \\ =520.929cm^2 \\ \approx520.9cm^2 \end{gathered}$

Thus, the area of the circle is 520.9 square-cm.