NAT 5 homework help

[mkxc3]

Hello, I got this homework, but I totally forgot how to do these 2 questions, can anyone help? It's for tmr btw

 

[MarkFL]

Using the concept of similarity, we know:

[MATH]\frac{\overline{AC}}{\overline{AB}}=\frac{\overline{CE}}{\overline{DE}}[/MATH]
Plug in the 3 given values, and solve for the unknown...what do you get?

 

[mkxc3]

Using the concept of similarity, we know:

[MATH]\frac{\overline{AC}}{\overline{AB}}=\frac{\overline{CE}}{\overline{DE}}[/MATH]
Plug in the 3 given values, and solve for the unknown...what do you get?

AHH yes this rings a bell, I got 9cm, thanks.