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2a = 18
a = 9
a√3 = 9√3
P = 9*9√3/2 = (81√3)/2
L = 9+18+9√3 = 27+9√3 = 9(3+√3)
pole = 0,5*9* 9 pierwiastów z 3
p= 40,5 pierwiaska z 3
ob= 27 + 9pierwiastkow z 3