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Dau 100 puncte+coroana+ma abonez!Dati click pe poza!

Dau 100 Punctecoroanama AbonezDati Click Pe Poza class=

Răspuns :


S(BNC) = (2/3)S(ABC)


S(BMN) = (1/2) S(BNC) = (1/2)·(2/3)S(ABC) = (1/3)·l²√3/4 = (1/3)24²√3/4 =


= (1/3)·24·24√3/4 = 48√3 cm²