Find the Circumference circle (18)

Math
r=18
The circumference of a circle is equal to Pi π times the diameter d.
π⋅(diameter)
Since the diameter d is equal to 2 times the radius r, the formula for circumference using radius is 2πr.
2π⋅(radius)
Substitute the value of the radius r=18 into the formula for the area of a circle. Pi π is approximately equal to 3.14.
2⋅π⋅18
Multiply 18 by 2.
36π
The result can be shown in multiple forms.
Exact Form:
36π
Decimal Form:
113.09733552…
Find the Circumference circle (18)

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