Question

Work out the circumference of this circle
Give your answer in terms pi
Radius 6mm

Answer 1

`39.699cm`

Explanation:

Definition(s):

1. Circumference

The outer boundary, especially of a circular area; perimeter.

2. Radius

A straight line extending from the center of a circle or sphere to the circumference or surface.

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solution

The circumference of a circle can be obtained by using the equation below:

`C=2\pi r`

where the mathematical constant,
`\pi`, has a value of approximately 3.14 and

`r` represents the radius of the circle.

All we have to do is multiply the given radius by two and multiply that value by
`\pi` to determine C:

`\text{Circumference} = 2*6cm*\pi`

`\text{Circumference}=12cm*\pi`

`\text{Circumference}=37.699cm`