Pole trapezu
[tex]P_{1} =\frac{(a+b)*h}{2} \\P_{1} =\frac{(5+10)*6}{2}\\P_{1} =45cm^{2}[/tex]
Pole ABC
[tex]P_{2} =\frac{a*h}{2} \\P_{2} =\frac{10*6}{2} \\P_{2} =30cm^{2}[/tex]
Pole ACD
[tex]P_{3} =P_{1}-P_{2} \\P_{3}=45cm^{2}-30cm^{2} \\P_{3} =15cm^{2}[/tex]
odp. Pole trójkąta ACD wynosi [tex]15cm^{2}[/tex].
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Pole trapezu
[tex]P_{1} =\frac{(a+b)*h}{2} \\P_{1} =\frac{(5+10)*6}{2}\\P_{1} =45cm^{2}[/tex]
Pole ABC
[tex]P_{2} =\frac{a*h}{2} \\P_{2} =\frac{10*6}{2} \\P_{2} =30cm^{2}[/tex]
Pole ACD
[tex]P_{3} =P_{1}-P_{2} \\P_{3}=45cm^{2}-30cm^{2} \\P_{3} =15cm^{2}[/tex]
odp. Pole trójkąta ACD wynosi [tex]15cm^{2}[/tex].