A circle is represented by the equation x²+y²−8y−20=0. What is the diameter of the circle?

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?

Order the integers from least to greatest. =0 =1 =2 =3 = -3

Me find the answer and explain the process to find the answer of the problem appreciate it : )