Bunuel wrote:

A square is inscribed in a circle. What is the area of the circle?

(1) The area of the square is 18.

(2) The circumference of the circle is \(6\pi\).

The question asks us to find Area of the circle. Hence finding the radius of the circle is Sufficient.

Statement 1: The inscribed square has Area = 18, hence we can find its side & the diagonal.

The diagonal of the square is the diameter for the circle. Hence we can find radius.

Statement 1 alone is Sufficient.

Statement 2: Circumference = \(6\pi\)

Sufficient to find radius.

Statement 2 alone is Sufficient.

Answer D.

Thanks,

GyM