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2) 5² + x² = 13²
25 + x² = 169
x² = 169 - 25 = 144
x = 12
Odp.: A
3) Dane:
h = 3√3 zatem dolna podstawa = 6, a przeciwprostokątna = 6
P = (a · h) /2
P = (6 · 3√3) /2 = 18√3 / 2 = 9√3
P = 9√3
Odp.: C