Real Numbers
Circumference of a Circle

The diameter of a circle measures 22 mm. What is the circumference of the circle?

Use 3.14 for [tex]\pi[/tex], and do not round your answer. Be sure to include the correct unit in your answer.



Answer :

Sure, let's solve this problem step by step.

The formula to calculate the circumference [tex]\( C \)[/tex] of a circle is given by:
[tex]\[ C = \pi \times d \][/tex]
where [tex]\( d \)[/tex] is the diameter of the circle, and [tex]\( \pi \)[/tex] (pi) is a constant approximately equal to 3.14.

Given:
- The diameter [tex]\( d \)[/tex] of the circle is 22 mm.
- We're using [tex]\( \pi \approx 3.14 \)[/tex].

1. Identify the values:
- Diameter [tex]\( d = 22 \)[/tex] mm
- [tex]\( \pi = 3.14 \)[/tex]

2. Substitute the given values into the formula:
[tex]\[ C = 3.14 \times 22 \][/tex]

3. Perform the multiplication:
[tex]\[ C = 69.08 \][/tex] mm

Therefore, the circumference of the circle is [tex]\( 69.08 \)[/tex] mm.