Aria unui trapez ortodiagonal cu diagonalele de 8 si 10 cm

Răspuns :

A = [tex] \frac{d1*d2}{2} = \frac{8*10}{2} = 40 cm^{2}[/tex]
Aria trapez = diagonala₁ * diagonala₂ / 2
Aria = d₁ * d₂ / 2
Aria = 8 * 10 / 2
Aria = 80 / 2
Aria =  40 cm ₂