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d=a√2
5√2=a√2 / √2
a = 5
P = 5*5=25
ob=4*5=20
a√2 = 5√2 /:√2
a = 5
Pole = a² = 5² = 25
Obwód =4a = 4*5 = 20.
Myślę, że będzie dobrze.
Pozdrawiam.! ;**
d = a√2
5√2=a√2
a=5
P=a^2
P=5^2
P=25 (cm^2)
Ob=4a
Ob=4*5
Ob=20 (cm)