Piramida, kupa i lopta

Piramida: $$V = \frac{B \cdot H}{3}$$

Kupa (baza krug): $$V = \frac{r^2 \pi \cdot H}{3}$$

Lopta poluprečnika $r$: $P = 4r^2\pi$, $V = \dfrac{4}{3} r^3 \pi$.