If AC=22 BC=19 in a figure what is the radius?

11.09units

Step-by-step explanation:

Find the diagram attached

The radius of the circle is line projecting from the center to the circumference. Hence AB is the radius of the circle.

To get AB, we will use the pythagoras theorem as shown;

Given

AC=22

BC=19

AC² = AB²+BC²

22² = AB²+19²

AB² = 22²-19²

AB² = 484-361

AB² = 123

AB = √123

AB = 11.09

Hence the radius of the circle is 11.09units

the answer i think is a)

step-by-step explanation:

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2