Question

ABC ~ DEF such that AB = 5 cm and DE = 15 cm. Based on this information, answer the following questions. 15. If DF = 21 cm, then AC equals​

Answer 1

Answer:

As per the dimensions give in the questions,

From the question it is given that,

△DEF∼△LMN

So, AB/ED=AC/EF=BC/DF

Consider AB/ED=AC/EF

5/12=7/EF

By cross multiplication,

EF=(7×12)/5

EF=16.8cm

Now, consider AB/ED=BC/DF

5/12=BC/15

BC=(5×15)/12

BC=75/12

BC=6.25.

Answer 2

AC is also 21 because it is similar