Volume of cone

Find the volume of a right circular cone-shaped building with a height of 9 cm and a radius base of 7 cm.

Correct answer:

V =  461.8141 cm³

Step-by-step explanation:

$$\begin{gathered} h=9\text{ cm } \\ r=7\text{ cm } \\ S=\pi \cdot r^2=3.1416\cdot 7^2\doteq 153.938{\text{cm}}^2 \\ V=S\cdot h\mathrm{/}3=153.938\cdot 9\mathrm{/}3=461.8141{\text{cm}}^3 \end{gathered}$$

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