Daca datele problemei sunt corecte vom avea:
Aplicam Pitagora (suma catetelor la patrat este egala cu ipotenuza la patrat)
AC²=AB²+BC²
72=AB²+2AB²
72=3AB²
AB²=24
AB=2√6 dam
BC=2√6×√2=2√12=4√3 dam
[tex]A_{ABC}=\frac{AB\cdot BC}{2}=\frac{2\sqrt{6}\cdot 4\sqrt{3} }{2} =12\sqrt{2}\ dam^2[/tex]
1 ar=100 m²
12√2 dam²=1200√2 m²=1200√2 ari
Un alt exercitiu gasesti aici: https://brainly.ro/tema/8709257
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