Răspuns :
Aria unui patrulater ortodiagonal este egala cu semiprodusul diagonalelor.
Deci [tex]A_{patrat}=\dfrac{d^2}{2}=\dfrac{16}{2}=8\ cm^2[/tex]
Altfel d=l√2⇒l=4/√2⇒A=l²=(4/√2)²=16/2=8 cm²
Deci [tex]A_{patrat}=\dfrac{d^2}{2}=\dfrac{16}{2}=8\ cm^2[/tex]
Altfel d=l√2⇒l=4/√2⇒A=l²=(4/√2)²=16/2=8 cm²