What’s the radius of each circle x^2+(y-3)^2=25

Radius = 5.

Step-by-step explanation:

Compare this with the following general form of a circle:

(x - h)^2 + (y - k)^2 = r^2

x^2        + (y - 3)^2  = 25

We see that the radius (r) =  sqrt 25 = 5.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)