Przekątna - e
Bok kwadratu - a
E = 8 dm
e² = 2a²
8 dm= 2 × a²
4 dm = a²
a = 2 dm
P= a×a = 2 ×2 = 4 dm²
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Przekątna - e
Bok kwadratu - a
E = 8 dm
e² = 2a²
8 dm= 2 × a²
4 dm = a²
a = 2 dm
P= a×a = 2 ×2 = 4 dm²