If I have the diameter of the circle ⭕️ what’s the equation if I’m finding the area of the circle?If the equation for radius is\pi x^(2)

Question

If I have the diameter of the circle ⭕️ what’s the equation if I’m finding the area of the circle?If the equation for radius is
`\pi x^(2)`

Answer 1

See below

Explanation:

`A=\pi r^2` for the area of a circle with a radius of
`r`