Question Number 223529 by Ismoiljon_008 last updated on 27/Jul/25
Answered by mr W last updated on 27/Jul/25
Commented by mr W last updated on 27/Jul/25
$${AF}={DC}={AB}\:\Rightarrow{AO}={AF}={AB}=\mathrm{12} \\ $$$${S}_{{OAB}} =\frac{\mathrm{12}×\mathrm{12}×\mathrm{sin}\:\mathrm{30}°}{\mathrm{2}}=\mathrm{36}\:\checkmark \\ $$
Commented by Ismoiljon_008 last updated on 28/Jul/25
$$\:\:\:{Thank}\:{you} \\ $$