Question

The diameter of a sphere is 21.6 cm. What is the sphere's volume? Round to the nearest tenth, if necessary.

Answer 1

By definition, the volume of a sphere is:
 $V = \frac{4}{3} (\pi) (r ^ 3)$
 Where,
 r: sphere radio
 Substituting values we have:
 $V = \frac{4}{3}(3.14)(( \frac{21.6}{2} ) ^ 3)$
 $V = 5273.99424$ Rounding the result to the nearest tenth:
 $V = 5274.0 cm ^ 3$ Answer:
 the sphere's volume is:
 $V = 5274.0 cm ^ 3$