Answer:
a. [tex]C=28\pi \ cm[/tex]
b. [tex]C=\frac{88}{1}\ cm[/tex]
c. [tex]C=87.96 \ cm[/tex]
Step-by-step explanation:
The formula to find the circumference of a circle is:
[tex]C=2\pi r[/tex]
Where "r" is the radius of the circle.
In this case you can identify that:
[tex]r=14\ cm[/tex]
Then:
a. Substituting the radius of the circle into the formula, you get:
[tex]C=2\pi (14\ cm)\\\\C=28\pi \ cm[/tex]
b. Substitute the radius into the formula (Remeber to use [tex]\pi=\frac{22}{7}[/tex] ) and then evaluate. So you get:
[tex]C=2(\frac{22}{7})(14\ cm)\\\\C=\frac{616}{7}\ cm\\\\C=\frac{88}{1}\ cm[/tex]
c. Substitute the radius into the formula but this time you must use the π button in the calculator:
[tex]C=2\pi (14\ cm)\\\\C=87.964 \ cm[/tex]
Rounded to the nearest hundreth, this is:
[tex]C=87.96 \ cm[/tex]
