Question

Use the following similar triangles (ABC ~ DEF). If AC= 18 when DF=19 and AB=15, what is DE? Solve mathematically. Round your answer to the nearest tenth.

Answer 1

15.8

Step-by-step explanation:DE=15*19/6

DE=15.83=15.8

Answer 2

Explanation:

As they are similar triangles,we can write

`(AB)/(DE)`=
`(AC)/(DF)`

⇒
`(15)/(DE)`=
`(18)/(19)`

⇒DE=15.8