Odpowiedź :
[tex]72 = \frac{a \times a}{2} | \times 2 \\ 144 = {a}^{2} \\ \bold{a = 12cm}[/tex]
[tex] \boxed{\boxed{ \boxed{ \bold{Odp. A}}}}[/tex]
[tex]72 = \frac{a \times a}{2} | \times 2 \\ 144 = {a}^{2} \\ \bold{a = 12cm}[/tex]
[tex] \boxed{\boxed{ \boxed{ \bold{Odp. A}}}}[/tex]