Question

The diameter of a circle is 18 m. Find its area in terms of \piπ.

Answer 1

Explanation:

A=pi(r^

`\pi {r}^(2) \\ \\ diameter \: is \: 18 \: meters \\ to \: find \: the \: radius \\ divide \: diameter \: by \: 2 \\ since \: the \: radius \: is \: \\ half \: the \: diameter18 / 2 = 9 \: meters \\ \\ \pi {r}^(2) \\ \pi( {9}^(2) ) \\ \pi(81) \\ \\ area = 81\pi`

Answer 2

Answer:A≈254.47m²

Explanation: