If circles x and y have the same area and circle x has a circumference of 14π, half of the radius of circle y is:  Choose the correct choice from the following options:  A) 16  B) 8  C) 4  D) 3.5  E) 1

Rationale: x be radius of circle x y be radius of circle y given : pi * x ^ 2 = pi * y ^ 2 also , 2 * pi * x = 14 * pi x = 7 thus y = 7 y / 2 = 3.5 ans : d
Answer: D