6-8 cm is the answer!! Hope this helps!
The distance from A to B is the radius, as point A is the center of the circle, and B is a point on the circle.
AB is 5 inches, so the radius will be 5 inches.
D is another point on the circle, so AD would also be considered a radius. This means that the distance from A to D would be 5 inches.
Are 6 and 15 the legs of the triangle?
I hope this helps you
x^2-4x-12
x -6
x +4
(x-6)(x+4)