Question Number 181945 by SEKRET last updated on 02/Dec/22
Answered by HeferH last updated on 02/Dec/22
Commented by HeferH last updated on 02/Dec/22
$${A}\left({ABCE}\right)\:=\:\frac{\mathrm{10}\centerdot\mathrm{5}}{\mathrm{2}}\:=\:\mathrm{25}\:{u}^{\mathrm{2}} \\ $$