Question

find the area of a circle is with a diameter of 6

Answer 1

The formula for Area of a circle is =

$\pi {r}^{2}$

So, the radius will be half of diameter, which is 6÷2,

The radius is 3,

A = 3.14 × 3×3

= 3.14 × 9

= 28.274

Answer 2

(Geometry)
A= πr^2

= π(3)^2

A= π9

You can also substitute in 3.14 for π or put in your calculator, the π symbol.