Question

I NEED HELPPP

Whats the length of LN?

Answer 1

LN = 66 cm

Explanation:

The 3 parallel lines divide the 2 sides they intersect in proportion, that is

`(DE)/(EF)` =
`(LM)/(MN)` , substitute values

`(7)/(15)` =
`(LM)/(45)` ( cross- multiply )

15LM = 315 ( divide both sides by 15 )

LM = 21

Hence

LN = LM + MN = 21 + 45 = 66 cm