Question

Triangle ABC is similar to Triangle DEF and A(Triangle ABC):A(Triangle DEF)=1:2.If AB=4 find DE​

Answer 1

$\: \: 1. \: 2\sqrt{2} \\ 2. \: \: 4 \\ 3. \: \: 8 \\ \color{green} 4. \: 4\sqrt{2}$

This is the answer ok please mark as brainlist