problema 4 va rog!!!
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Heron
A = √p(p - a)(p - b)(p - c)
p = (77+51+40)/2 = 84
A = √84(84-77)(84-51)(84-40)
A = √84·7·33·44
A = √853776
A = 924 cm²
A = h1·BC/2 => h1 = 924·2/40 = 46,2 cm
A = h2·AB/2 => h2 = 924·2/51 = 36,2 cm
A = h3·AC/2 => h3 = 924·2/77 = 24 cm
Răspuns:
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