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aflati aria unui patrat cu diagonala de 16 cm

Răspuns :

Aria patrat = [tex] \frac{ diagonala^{2} }{2} [/tex] deci Ap = [tex] \frac{ 16^{2} }{2} [/tex] = [tex] \frac{256}{2} [/tex] = 128[tex] Cm^{2} [/tex]