Find the Circumference circle (4.5)

Math
r=4.5
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=4.5 into the formula for the area of a circle. Pi π is approximately equal to 3.14.
2⋅π⋅4.5
Multiply 2π⋅4.5.
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Multiply 4.5 by 2.
Multiply 9 by π.
28.27433388
28.27433388
Find the Circumference circle (4.5)

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