Answer :
Given: A sphere with a radius of 6.891 cm.
Required: To determine the volume of the sphere.
Explanation: The volume of a sphere with radius r is given by the formula-
[tex]V=\frac{4}{3}\pi r^3[/tex]Substituting the value into the formula as-
[tex]V=\frac{4}{3}\times3.14\times(6.891)^3[/tex]Further solving gives the volume as-
[tex]V=1369.9828\text{ }cm^3[/tex]Final Answer: The volume of the sphere is 1369.983 cubic centimeters (approx).