For the Pair of Similar Triangles, Find the Length of the Indicated

Multiple Choice

For the pair of similar triangles, find the length of the indicated side.
- In the left triangle, the hypotenuse has length 10 , and the longer leg has length 8 . In the right triangle, the hypotenuse has length 5 , the longer leg has length 4 , and the shorter leg has length 3 . Find the length, $x$ , of the shorter leg of the left triangle.

A) $x=9$
B) $x=3$
C) $x=4$
D) $x=6$