Question

Find the area of a circle diameter equals to 30 cm​

Answer 1

The area of the circle is

`225\pi`

Explanation:

The diameter equals 30 cm, so the radio equals 15 cm.

The formula of the circle area is

`\pi * {r}^(2)`

Then,

`\pi * {15}^(2) = 225\pi`

Answer 2

225Pi (in terms of Pi)

Or

706.5cm

Explanation:

Area = Pi * radius^2

Radius is half of the diameter, so it is 15.

Area = Pi*15^2

Which is:

225Pi

Or

706.5