Help quickly with this math question

Question

asked Nov 26, 2021 154k views

1 Answer

Sanjit Kumar Mishra · Answer 1 · 2021-11-29T17:41:42+0000

Answer:

The circumference of circle is 8π ft.

Explanation:

Given that the formula of area of a circle is A = π×r² where r represents the radius of circle. So you have to find the radius first :

$area = \pi * {r}^(2)$

$let \: area = 16\pi$

$\pi {r}^(2) = 16\pi$

${r}^(2) = 16$

r = √(16)

$r = 4 \: feet$

Next, you have to apply circumference of circle formula, C = 2×π×r :

$c = 2 * \pi * r$

$let \: r = 4$

$c = 2 * \pi * 4$

$c = 8\pi \: feet$