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a=1,b=√2, c= √3
calculati cu formula lui Heron ... 


Răspuns :

p=P/2=(1+√2+√3)/2
formula heron zice ca √p(p-a)(p-b)(p-c)

√p(p-a)(p-b)(p-c)√(1+√2+√3)/2*[(1+√2+√3)/2-1][(1+√2+√3)/2-√2][(1+√2+√3)/2-√3]