Answer:
circumference - diameter
circumference - 2 times radius
area - radius squared
Step-by-step explanation:
we know that
The circumference of a circle is equal to
[tex]C=\pi D[/tex] or [tex]C=2\pi r[/tex]
where
D is the diameter and r is the radius
therefore
[tex]\pi =\frac{C}{D}[/tex] or [tex]\pi =\frac{C}{2r}[/tex]
The number pi is the ratio circumference - diameter or is the ratio circumference - 2 times radius
The area of the circle is equal to
[tex]A=\pi r^{2}[/tex]
therefore
[tex]\pi =\frac{A}{r^{2} }[/tex]
The number pi is the ratio Area - radius squared
