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calculati aria unui hexagon regiulat care are apotema de 7 cm

Răspuns :

a=L√3/2=7
L=14/√3=14√3/3   ⇒ L²=196/3

Ahexagon=3L²√3/2=3×196/3×√3/2=196√3/2=98√3 cm²