Question

This is a similar triangle please find the missing length. (?)

Answer 1

Answer:

10

Step-by-step explanation:

Set up as a proportion:

$\frac{QR}{QP}=\frac{BA}{BC}$, insert given values

$\frac{?}{12}=\frac{30}{36}$, cross multiple

36*?=30*12

36*?=360, divide both sides by 36 to get the missing side (?) by itself

?=10