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Work out the circumference of this circle.
Give your answer in terms of pie
6 mm

Work out the circumference of this circle. Give your answer in terms of pie 6 mm-example-1

1 Answer

11 votes

Answer: 12pi millimeters

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Step-by-step explanation:

The circumference of a circle is the distance around the full circle, aka the perimeter.

The formula for the circumference is

C = pi*d

where d is the diameter. The radius given is 6, so the diameter is 2*6 = 12.

The circumference, is therefore:

C = pi*d

C = pi*12

C = 12pi millimeters

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As a slight alternative, you can use this formula

C = 2*pi*r

with r = 6 as the radius

C = 2*pi*r

C = 2*pi*6

C = 2*6*pi

C = 12pi

We get the same answer as before.

User Christoph Winkler
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