December 2019 1 43 Report
Num triângulo ABC, sabe-se que os lados AB e AC medem, respectivamente, 10cm e 12cm e que cos de  = 4/5. Então a área do triângulo é: A)60cm^2 B)48cm^2 C)42cm^2 D)40cm^2 E)36cm^2
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