Question

For a circle with a diameter of 4 centimeters, what is its exact area?

Answer 1

The area of a circle with diameter d is

`\begin{gathered} A=\pi((d)/(2))^2 \\ \\ A=\pi((4)/(2))^2 \\ \\ A=4\pi \end{gathered}`

Therefore, the exact area is 4π centimeters square.