Odpowiedź:
V=Pp×H
[tex]pp = \frac{a {}^{2} \sqrt{3} }{4} \\ pp = \frac{ {(12dm)}^{2} \sqrt{3} }{4} \\ pp = \frac{144dm {}^{2} \sqrt{3} }{4} \\ pp = 36 \sqrt{3} dm {}^{2} [/tex]
[tex]v = 36 \sqrt{3} {dm}^{2} \times 12dm = 432 \sqrt{3} dm {}^{3} [/tex]
