If you want to calculate the area of a rectangle, triangle, or circle in Excel, here is how you can do that.It is possible to calculate the area of those shapes when certain values such as length ...

This is half of a circle with a radius of 1 (no units) such that it would have an area of pi/2. If I find the area with some other method, I can just multiply this area by 2 and get pi. That's the ...