Odpowiedź :
Bok kwadratu to a. Wtedy długosc przekątnej to a√2
a) a√2 = 2 cm. <=> a = √2cm., a² = 2cm²
b) a√2 = 10 cm. <=> a = 5√2cm., a² = 50cm²
c) a√2 = 3√3 cm. <=> a = 3√6/2 cm., a² = 13.5cm²
a) a√2 = 2 cm. <=> a = √2cm., a² = 2cm²
b) a√2 = 10 cm. <=> a = 5√2cm., a² = 50cm²
c) a√2 = 3√3 cm. <=> a = 3√6/2 cm., a² = 13.5cm²