If you have a semi-circle with a diameter of 8.6ft, what's the semi-circles area? Use the formula \pi r^(2)

Question

If you have a semi-circle with a diameter of 8.6ft, what's the semi-circles area?

Use the formula
`\pi r^(2)`

Answer 1

So,

The diameter is 8.6ft. We need to convert to radius.

2 radius = 1 diameter

8.6/2 = 4.3 ft.


`\pi r{2}`


`\pi 4.3^(2)`


`\pi 18.49`

3.14(18.49)

58.0586ft.²

Divide by 2 (semi-circle)
29.0293ft.²