Question

The diameter of a circle is 9 cm. What is the area of the circle?

Answer 1

`20.25 π\ "cm"^2`

Explanation:

`"Radius" = "Diameter"/2 = "9 cm"/2 = "4.5 cm"`

Area of circle`= π r^2`

`"A" = π × ("4.5 cm")^2 = 20.25pi\ "cm"^2 ≈ "63.585 cm"^2`