Question

Slove for BC
A) 12
B) 10
C) 8
D) 6​

Answer 1

A) 12

Explanation:

These are similar triangles so set up a ratio of base to height.

6/4 for the triangle you know and 18/x for the one you do not.

Cross multiply to find x. 18*4= 72, 72/6=x, x=12