Question

Given ΔABC is similar to ΔDEF, calculate the value of BC.

Answer 1

BC = 6.4

Explanation:

Since the triangles are similar then the ratio of corresponding sides are equal, that is

`(BC)/(EF)` =
`(AC)/(DF)` ← substitute values

`(BC)/(12)` =
`(8)/(15)` ( cross- multiply )

15BC = 96 ( divide both sides by 15 )

BC = 6.4