Calculating the amount of interest on $2,000.00 for 4 years, compounding daily at 2.25% apr. from the monthly interest table use $ 1.094171 interest for each $1.00 invested

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?