Question

how do i solve thiss pls explain. Radius of circle is 3. Find area and diameter of circle.

Answer 1

Given:

The radius of the circle, r=3.

Hence, the diameter of the circle is,

$\begin{gathered} D=2r \\ =2\times3 \\ =6 \end{gathered}$

Therefore, the diameter of the circle is 6.

Now, the area of the circle can be calculated as,

$\begin{gathered} A=\pi r^2 \\ =\pi\times3^2 \\ =\pi\times9 \\ =9\pi \\ =9\times\frac{22}{7} \\ =28.28 \end{gathered}$

Therefore, the area of the circle is 9π or 28.28.