please solve the question and find the answer

Answer:
V = 1,911.4 [tex]m^{3}[/tex]
Step-by-step explanation:
Volume of a sphere = [tex]\frac{4}{3}[/tex]π[tex]r^{3}[/tex]
V = [tex]\frac{4}{3}[/tex](3.14)[tex]7.7^{3}[/tex]
V = 1,911.4 [tex]m^{3}[/tex]