If you would explain your answer, that'd be great, but you can just answer it if you want

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

(60 points) explain this in detail

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set