Question

Find the volume of the sphere. Round your answer to the nearest tenth.

Answer 1

Step 1:

$V=\frac{4}{3}{\mathrm{\pi r}}^3$

Convert diameter to radius

$Radius=\frac{18}{2}=9mm$

Step 2:

$$\begin{gathered} =\frac{4}{3}\mathrm{\pi }{\left(9\right)}^{}\mathrm{Substitute} \\ =972\mathrm{\pi } \end{gathered}$$

Step 3: $3053.62$ Use calculator

Final Answer: The volume is about 3053.62 cubic mm.