Circles X and Y are concentric. If the radius of circle X is seven times that of circle Y, what is the probability that a point selected inside circle X at random will be outside circle Y?	Select:
A) 13	B) Pi/3	C) Pi/2	D) 5/6	E) 48/49
Small circle radius = a, so area = PI a ^ 2   Large circle radius = 7a, so area = 9. PI a ^ 2   Area of shaded region = 49PI a^2 - PI a^2 = 48 PI a^2   So, probability = ( 48 PI a^2 ) / (49 PI a^2 )   =48/49 = Answer = 48/49
<result>E</result>
Circles X and Y are concentric. If the radius of circle X is seven times that of circle Y, what is the probability that a point selected inside circle X at random will be outside circle Y?