Question

Daca trapezul ortodiagonal ABCD,cu AB paralel cu CD ,are diagonalele BD=115 si AC=72,atunci aria trapezului este egala cu

Answer 1

   
[tex]\displaystyle\\ \text{Aria oricarui patrulater ortodiagonal se calculeaza cu formula:}\\\\ A = \frac{d_1\times d_2}{2}\\\\\\ A_\text{trapez ABCD}= \frac{AC\times BD}{2}= \frac{72\times 115}{2}=36\times 115=\boxed{4140 ~cm^2}[/tex]