Question

Using 3.14 for pie what is the area of the circle to the nearest tenth of an inch

Answer 1

`A = \pi {r}^(2) \\ \\ r = (7.5)/(2) = 3.75`

So

`A = (3.14)({3.75}^(2) ) \\ A = (3.14)(14.0625) \\ A = 44.15625 \\ A =44.16`

Answer 2

`area = \pi {r}^(2) \\ r = (1)/(2) * 7.5 = 3.75 \\ 3.14 * 3.75 {}^(2) \\ 3.75 {}^(2) = 14.06 \\ 3.14 * 14.06 = 44.1484 \: inches {}^(2)`

hope that helped