How do you work out the area of a circle using the pi r squared formula?

Answer 1

Given the radius, say 2 you square it first. In this example that would be 4. Next you multiply it by Pi. Since Pi goes on forever, you need to approximate it. How good your approximation is depends on what your needs are. Let's use 3.14. So the area of the circle is 4x(3.14)=12.56