π is the ratio of circumference of a circle to ___.
its radius
its area
square of its radius
its diameter
The ratio of the circumference of a circle to its diameter is π .
π is the ratio of circumference to radius of the circle.
π is the ratio of the circumference to the __ or the ___ of the circle.
π represents the ratio between the circumference and the diameter of a circle.
If the perimeter of a square is equal to the circumference of a circle then the ratio of their areas is
(a) 4 : π (b) π : 4 (c) π : 7 (d) 7 : π