The circumference is _ the area.
Equal to the area. Area of circle is\(\pi r^2\)This equals to \(4 \pi\) due to 2^2.Circumference is \(2 \pi r\)This equals to \(2 \pi (2)\)When you multiply the 2 and the radius together, they equal to 2^2.Which results to \(4 \pi\)
