Question

aflati aria rombului cu diagonalele de 18 cm si 20 cm

Answer 1

[tex]Ipoteza:~romb ~~~~~~~~~~~~~d_{1}~=~18~cm ~~~~~~~~~~~~~d_{2}~=~20~cm Concluzie: ~A_{romb}~=~? Demonstratie: ~A_{romb}~=\dfrac{{d_{1}~*~d_{2}}}{2}~==\ \textgreater \ ~ A_{romb}~=~\dfrac{18~*~20}{2}~==\ \textgreater \ ~ A_{romb}~=~\dfrac{360}{2}~==\ \textgreater \ ~ \boxed{A_{romb}~=~180~cm^2}}[/tex]