The diameter is 6 units.
Given the diameter of the circle, multiply it by π (approx 3.14159).
The perimeter of a cirlcle is its circumference which is: 2*pi*radius or diameter*pi
You need to measure it with something flexible, like a string.If you know for sure it is a circle, it would be easier to measure the diameter, then multiply by pi.
circumference=r2pi
Because:- circumference/diameter = pi and when the formula is rearranged circumference = pi*diameter
The formula for the circumference of a circle is the same, whatever its diameter. Circumference = pi*diameter.
use the formula pi*diameter = circumference and the formula diameter = 2*radius and combine them 2pi*radius = circumference now you have a formula that you can just plug you numbers into. if you have 3 as your radius, then this is how to find the circumference 2pi*3=circumference 6.28*3=circumference 18.84=circumference
There is no circumference of a cone, but, we only do the circumference of the circle. the formula for the circle is pi times D. D= Diameter
They both are a formula
The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius of the circle.
Formula: diameter = pi / circumference