ratio of areas

The ratio of the areas of two circles is 9:4. If the circumference of the smaller circle is , what is the perimeter of the larger circle?

(A)
(B)
(C)
(D)


Thanks

The ratio of the areas of two circles is 9:4

The circumference of the smaller circle is given by the formula

The circumference of the larger circle is given by the formula

Therefore the correct answer is (D).

Thank you!!