A circle has a circumference of 43.96 cm and a radius of 7 cm.

What number represents the ratio of the circumference to the radius of this circle?

The the ratio of circle circumference to the radius is always 2 π.

C = 2 r π

In this case:

C = 43.96

r = 7

also:

C = 2 r π

43.96 = 2 ∙ 7 ∙ π

43.96 / 7 = 6.28 = 2 π