paralelkenar

Question

Bl=2cl a(abcd)=54 a(kbl)=7 ise a(atk)=?

Answer 1

$A(ABK)=s$,$A(AKT)=s_1$ olsun. $A(ABL)=s+7=\frac 12.\frac 23.54=18$ buradan $s=11$ $br^2$  dir.  Öte yandan $A(ABT)=11+s_1=\frac 12.54=27\Rightarrow s_1=16$ $br^2$ olu.