Two tangents are drawn from point a which is 37 cm from the center of the circle. the diameter of the circle is 24 cm. what is the length of each tangent from point a to the point of tangency?

So.. hmm notice the picture below

keep in mind that, the diameter is 24, radius is half that then, and
that the point of tangency, or, where the diameter, or radius, meets the tangent, is a right-angle

thus, just use pythagorean theorem to find the tangent's length