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Problema 20 Help Please Dau Coronița

Problema 20 Help Please Dau Coronița class=

Răspuns :

A=L×l
116=8×L
L=14,5
b. l=L/2
A=L×l=L×L/2=L^2/2
112,5=L^2/2
225=L^2
L=15
l=15/2=7,5