Question

If the triangles in the figure are similar what is the length of side b?

Answer 1

A 36

Explanation:

We can determine the scale factor

From triangle ABC BC =9

DEF EF = 90

We multiply by 10

The scale factor is 10

AC ( 10) = DF

We know DF = 360

b * 10 = 360

Divide each side by 10

10b/10 = 360/10

b = 36