Question

Cati litri de apa incap intr-un vas sub forma unei piramide patrulatere regulate muchia bazei de 6 dm si inaltimea de 10 dm.

Answer 1

$Notatii: \\ V=volumul\;piramidei \\ Ab = aria bazei \\ l = latura bazei \\ h=inaltimea \\ \\ V= \frac{Ab*h}{3}= \frac{l^{2}*h}{3}=\frac{6^{2}*10}{3}= \frac{36*10}{3}=\frac{360}{3}=120\;dm^{3} \\ \\ 1\;dm^{3}=1\;litru \\ =>\;\;\;\text{In vas incap: }\;\boxed{120 \; litri}$