Question

For any circle, which ratio is equal to the number π? Select all that apply.

Answer 1

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

$C=\pi D$ or  $C=2\pi r$

where

D is the diameter and r is the radius

therefore

$\pi =\frac{C}{D}$  or $\pi =\frac{C}{2r}$

The number pi is the ratio circumference - diameter or is the ratio circumference - 2 times radius

The area of the circle is equal to

$A=\pi r^{2}$

therefore

$\pi =\frac{A}{r^{2} }$

The number pi is the ratio Area - radius squared