Zadanie 2
[tex]a\sqrt{2}[/tex]=24 cm /:[tex]\sqrt{2}[/tex]
a=12[tex]\sqrt{2}[/tex]
P=a^2
P=(12[tex]\sqrt{2}[/tex])^2
P=288 cm2
Zadanie 3
a) 10 cm*4=40 cm
P=e*f/2
P=10 cm*40 cm/2
P=200 cm2
b) 10 cm+4 cm=14 cm
P=10 cm*14 cm/2
P=70 cm2
