Lenght of xs .

Question

Answer 1

Draw a line from point x to point r to form a right triangle.

Looking at triangle RSX.

RS is equal to 1/2 of RT = 12 cm

XR is equal to the radius 20 cm

By the Pythagorean Theorem:

RS**2 + XS**2 = XR**2

12**2 + XS**2 = 20**2

XS**2 = 256

XS = 16 cm (C)