PLEASE HELP ME ON THIS

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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?