Question

A area de circulo é igual 144$\pi$$\\ m²$. Determine o comprimento da circunferência desse circulo

Answer 1

$A = \pi*r^2\\\\ 144\pi = \pi*r^2\\\\ r^2 = 144\\\\ r = \sqrt{144}\\\\ \boxed{r=12\ m}$

$C = 2\pi*r\\\\ C = 2\pi*12\\\\ \boxed{C = 24\pi\ m}$