Question

Find the radius of a sphere if its volume is 904.32 cubic cm. ($\mathrm{\pi }$= 3.14)

Answer 1

Let the radius of the sphere be r cm.

Volume of the sphere = 904.32 cm³

$$\begin{gathered} \therefore \frac{4}{3}\mathrm{\pi }{r}^3=904.32{\mathrm{cm}}^3 \\ \Rightarrow r^3=\frac{904.32\times 3}{4\times 3.14}=216 \\ \Rightarrow r^3={\left(6\right)}^3 \\ \Rightarrow r=6\mathrm{cm} \end{gathered}$$
Thus, the radius of the sphere is 6 cm.