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Exercise 5

Area del triangolo equilatero

Theory used: Triangoli rettangoli con angoli di 45°, 30° e 60°Perimetri e aree dei poligoni

L’area di un triangolo equilatero di lato $10$ cm è:

A) $50\ \text{cm}^2$
B) $50\sqrt{3}\ \text{cm}^2$
C) $25\sqrt{2}\ \text{cm}^2$
D) $10\sqrt{3}\ \text{cm}^2$
E) $25\sqrt{3}\ \text{cm}^2$

The full solution of this exercise is in the unlocked version.