Odpowiedź :
a) a = 6cm
P = 6 x 6 = [tex]36cm^{2}[/tex]
b) 20cm = 4a /:4
a = 5cm
P = 5 x 5 = [tex]25cm^{2}[/tex]
c) d = 8cm
P = 8 x 8 / 2
P = 64/2 = [tex]32cm^{2}[/tex]
a) a = 6cm
P = 6 x 6 = [tex]36cm^{2}[/tex]
b) 20cm = 4a /:4
a = 5cm
P = 5 x 5 = [tex]25cm^{2}[/tex]
c) d = 8cm
P = 8 x 8 / 2
P = 64/2 = [tex]32cm^{2}[/tex]