Question

The diameter of a circle is 30 ft. Find its area to the nearest whole number.

Answer 1

`\displaystyle 707\:ft.^2`

Explanation:

Split the diametre in half before proceeding:

`\displaystyle \pi{r}^2 = A \\ \\ 15^2\pi = A \hookrightarrow 225\pi = A \hookrightarrow 706,85834706... = A \\ \\ \boxed{707 \approx A}`

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