What is the relationship between the circumference and diameter of a circle?

Question

What is the relationship between the circumference and diameter of a circle?

Answer 1

C=pi*D

circumference is pi (3.14...) diameters.

E.g. if a circle has a diameter of 1 unit, its circumference is pi units (3.14...).

the pi button on your calculator should look like a T with 2 vertical 'legs'. in the computer's calculator it's just called pi.

Answer 2

Circumference of a circle =  Pi times the radius, Pr.

Pi = 22/7

Diameter of a circle = 2Pi

You can build your relationship from that.

Answer 3

Pi

Answer 4

The circumference is equal to the diameter times pi (i.e. pi is the ratio of the circumference to the diameter).

c = (pi)*d

where pi = 3.141592654......

Also, area = pi times the diameter squared divided by 4 = pi times the radius squared

A = ((pi)*d^2)/4 = (pi)*r^2

Answer 5

the circumference or perimeter of the circle is equal to the diameter of the circle multiplied by (pi).

The circumference of a circle is the actual length around the circle which is equal to 360°. Pi is the number needed to compute the circumference of the circle.

p is equal to 3.14.

Pi is greek and has been around for over 2000 years!

so: C=pi*d

Answer 6

The diameter is the one needed to get the circumference of a circle if the radius is not given the formula is 3.14 times the diameter