Odpowiedź:
a) [tex]P_{1}[/tex] = 1/2 x 6cm x 3cm = 3cm x 3cm = [tex]9cm^{2}[/tex]
[tex]P_{2}[/tex] = 1/2 x (4cm + 6cm) x 5cm = 1/2 x 10cm x 5cm= 5cm x 5cm = 25[tex]cm^{2}[/tex]
[tex]P_{3}[/tex] = 9[tex]cm^{2}[/tex] + 25[tex]cm^{2}[/tex] = 34[tex]cm^{2}[/tex]
b) 9cm - 6cm = 3cm
[tex]P_{1}[/tex] = 1/2 x (6cm + 9cm) x 3cm = 15cm x 1,5cm = 22,5[tex]cm^{2}[/tex]
[tex]P_{2}[/tex] = 6cm x 9cm = 54[tex]cm^{2}[/tex]
[tex]P_{3}[/tex] = 22,5[tex]cm^{2}[/tex] + 54[tex]cm^{2}[/tex] = 76,5[tex]cm^{2}[/tex]
Szczegółowe wyjaśnienie:
Robiłam to wczoraj na lekcji także jest dobrze
