Triangle ABC is similar to triangle DEF . The length of BC¯¯¯¯¯ is 21 cm. The length of DE¯¯¯¯¯ is 10 cm. The length of EF¯¯¯¯¯ is 14 cm.
What is the length of AB¯¯¯¯¯?
What is the length of AB¯¯¯¯¯?