Question

In the figure to the​ right, if AC equals 18 and BC equals 15​, what is the​ radius?

Answer 1

Answer:

The radius is 9.9 units

Step-by-step explanation:

The picture of the question in the attached figure

we know that

In the right triangle of the figure ABC

Applying the Pythagorean Theorem

$AC^2=AB^2+BC^2$

substitute the given values

$18^2=AB^2+15^2$

solve for AB

$AB^2=18^2-15^2\\AB^2=99\\AB=9.9\ units$

Remember the the side AB of right triangle represent the radius of the circle

therefore

The radius is 9.9 units