The circle with center , is inscribed in the square . What is the ratio of the diameter to the circumference of the circle given that the square has an area of ?

For any circle, what is the ratio of its circumference to its diameter?

Find the circumference of a circle with a diameter measuring .

A given circle has a circumference of and a radius of . What is the ratio of the circle's circumference to its diameter?

A given circle has a circumference of and a radius of . What is the ratio of the circle's circumference to its diameter?

A given circle has a circumference of and a radius of . What is the ratio of the circle's circumference to its diameter?

For any given circle, what is the ratio of its diameter to its circumference?

Equilateral triangle is inscribed in a circle. The perimeter of the triangle is . What is the radius of the circle?