Two circles have the same center $C.$ (Circles which have the same center are called concentric.) The larger circle has radius $10$ and the smaller circle has radius $6.$ Determine the area of the ring between these two circles.
= Area of larger circle - area of smaller circle
area of circle = pi r^2
pi ( 102 ) - pi (62 ) = pi (10^2 - 6^2 ) = .......... units2