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d = a√2
d= √18* √2 = √36 cm = 6 cm
lub
a=√18 = 3√2
d=a√2
d= 3√2 * √2 = 3* 2 = 6 cm
d = a√2
d= √18* √2 = √36 cm = 6 cm
lub
a=√18 = 3√2
d=a√2
d= 3√2 * √2 = 3* 2 = 6 cm
d= pod pierwsiatskiem 18 * pod pierwsiastkiem 2
d = pod pierwsiatkiem 36
d= 6 cm
odp. przekątna ma długość 6 cm