https://gyazo.com/55afe69c0f00bff85a3a9c53bd353b42
Sorry for the really poorly drawn and lit picture...
Basically this quadrilateral is drawn inside a circle whose middle point is O. Here is the info I was given
KL = 18
LM = 24
KN = NM
What I need to find out is the area of KLMN.
What I...