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12x=24
x=2
boki: 8, 6, 10
Pole S ze wzoru Herona:
S=√[p(p-a)(p-b)(p-c)]
p=0,5*Obw=0,5*24=12
S=√[12*(12-8)(12-6)(12-10)]=√[12*4*6*2]=√576=24