Answer:
The length of EF is 15 cm.
Step-by-step explanation:
In the similar triangles, the sides are in proportion.
AC/DF =BC/EF
AC =12, BC = 18 and DF = 10
Now plug in these values in the proportion and find the value EF
12/10 = 18/EF
Cross multiplying, we get
12 EF = 18 *10
12EF =180
EF = 180/12
EF = 15
The length of EF is 15 cm.
Hope you will understand the concept.
Thank you.