[tex]\boxed{\boxed{\text {Volume =} \dfrac{4}{3} \pi r^3}}[/tex]
Given that the volume is 972π mm³, find radius:
[tex]972\pi = \dfrac{4}{3} \pi r^3[/tex]
[tex]r^3 = 972\pi \div \dfrac{4}{3} \pi[/tex]
[tex]r^3 = 729[/tex]
[tex]r = \sqrt[3]{729} [/tex]
[tex]r = 9 \text{ mm}[/tex]
Find Circumference:
[tex]\boxed { \boxed {\text{Circumference = }2 \pi r}}[/tex]
[tex]\text{Circumference = }2 \pi (9)[/tex]
[tex]\text{Circumference = }18 \pi \text{ mm} [/tex]
