Question

Triangle ABC is similar to triangle DEF . The length of AC¯¯¯¯¯ is 12 cm. The length of BC¯¯¯¯¯ is 18 cm. The length of DF¯¯¯¯¯ is 10 cm.

What is the length of EF¯¯¯¯¯?

Answer 1

AC/DF=BC/EF
So 12/10=18/EF
EF=15cm