Question

Find the area of this circle

Answer 1

Area is 314 ft²

Explanation:

`A = \pi {r}^(2)`

r is radius,

`r = (diameter)/(2) = (20)/(2) = 10 \: ft`

therefore:

`A = 3.14 * {10}^(2) \\ A = 3.14 * 100 \\ A = 314 \: {ft}^(2)`

Answer 2

314ft²

Explanation:

A = 3.14(10²)

A = 3.14 x 100

A = 314ft²