Question

Could someone please help me find the length of x?

Answer 1

The problem is underdetermined.

Explanation:

Do not use any formulas! There's always a formula.

This one seems underconstrained. I drew two different circles that satisfy the `AC=6, BC=7, CD=CE=3` length constraints.

Answer 2

`x=14` units

Explanation:

`KLMN` is a cyclic quadrilateral,
`=> anglePKN=anglePLM=b`, and,
`anglePNK=anglePML=c`,
`=> DeltaPKN and DeltaPLM` are similar,
`=> (PM)/(PL)=(PN)/(PK)`
`=> x/6=7/3`
`=> x=(6xx7)/3=14` units