1)
Pole gornego trojkata:
[tex]P_1=\frac{2dm*2dm}{2} = 2dm^2\\[/tex]
Pole srodkowego trojkata:
[tex]P_2=\frac{3dm*2dm}{2}=3dm^2[/tex]
Pole dolnego trojkata:
[tex]P_3=\frac{4dm*2dm}{2} = 4dm^2[/tex]
Pole calosci:
[tex]P_c=P_1+P_2+P_3\\P_c=2dm^2+3dm^2+4dm^2=9dm^2[/tex]
2)
Pole jednego smigla:
[tex]P_1=\frac{10cm*5cm}{2} = 5cm*5cm=25cm^2[/tex]
Pole calosci:
[tex]P_c=4*P_1\\P_c=4*25cm^2=100cm^2[/tex]
3)
Pole duzego trojkata:
a = 2m+1m+2m = 5m
h = 4m+1m=5m
[tex]P_1=\frac{5m*5m}{2} = \frac{25m^2}{2}=12.5m^2[/tex]
Pole malego trojkata:
a = 1m
h = 1m
[tex]P_2 = \frac{1m*1m}{2}=\frac{1m^2}{2}=0,5m^2[/tex]
Pole calosci:
[tex]P_c = P_1-P_2\\P_c=12,5m^2-0,5m^2=12m^2[/tex]
