Answer:
9.31 cm³ (3 sf)
Step-by-step explanation:
Circumference of a sphere = circumference of a circle = 2[tex]\pi [/tex]r
⇒ 2[tex]\pi [/tex]r = 8.20 cm
⇒ r = 8.20 ÷ 2[tex]\pi [/tex] = [tex]\frac{41}{10\pi } [/tex]
Volume of sphere = [tex]\frac{4}{3} \pi r^3[/tex]
= [tex]\frac{4}{3} \pi (\frac{41}{10\pi }) ^3[/tex]
= [tex]\frac{68921}{750\pi ^2} [/tex]
= 9.310876397... = 9.31 cm³ (3 sf)
