1) W podstawie trójkąt.
[tex]P_{p} = \frac{1}{2}\cdot8 \ cm\cdot4 \ cm = 16 \ cm^{2}\\\\h = 5 \ cm\\\\V = P_{p}\cdot h = 16 \ cm^{2}\cdot5 \ cm = 80 \ cm^{3}[/tex]
2) W podstawie prostokąt.
[tex]P_{p} = 10 \ dm\cdot5 \ dm = 50 \ dm^{2}\\\\h = 10 \ dm\\\\V = P_{p}\cdot h = 50 \ dm^{2}\cdot10 \ dm = 500 \ dm^{3}[/tex]
3) W podstawie 2 trapezy.
[tex]P_{p} = 2\cdot\frac{8 \ cm + 16 \ cm}{2}\cdot4 \ cm=24 \ cm\cdot4 \ cm = 96 \ cm^{2}\\\\h = 20 \ cm\\\\V = P_{p}\cdot h = 96 \ cm^{2}\cdot20 \ cm = 1920 \ cm^{3}[/tex]
