Why is it that when you are' finding the' area 'of a circle', you have to times the' square of the radius (r)' by pi
When you are dealing with a circle, pi is almost always involved. If you didn't use pi, you would be finding the area of a square with a length and width of 'r' r x r =r^2 is the area of a SQUARE
+776 and the equation isi'ntyour equation:
\(\sqrt{2}\pi r = A \Rightarrow Area\)
but the equation is really this:
\(2 \pi r = A \Rightarrow Area\)
+5265 Actually, you listed the Circumference, not the area.
\(Area=\pi r^2 \)
NOT
\(Area=2\pi r=\pi d\)
d=diameter
