Question

Guys I need this ASAP I NEED the exact answer in terms of n/pi. I also need to use n/pi=22/7 and express the answer as a fraction in lowest terms. And I need to use the n/pie button on my calculator and express the answer to the nearest hundredth but I don’t know how to do this so PLEASE LOOK AT THE PIC and ANSWER ALL 3 parts of this so I can get full credit please I am begging you I need this ASAP!!

Answer 1

Answer:

a.  $C=28\pi \ cm$

b. $C=\frac{88}{1}\ cm$

c.  $C=87.96 \ cm$

Step-by-step explanation:

The formula to find the circumference of a circle is:

$C=2\pi r$

Where "r" is the radius of the circle.

In this case you can identify that:

$r=14\ cm$

Then:

a. Substituting the radius of the circle into the formula, you get:

$C=2\pi (14\ cm)\\\\C=28\pi \ cm$

b. Substitute the radius into the formula (Remeber to use $\pi=\frac{22}{7}$ ) and then evaluate. So you get:

$C=2(\frac{22}{7})(14\ cm)\\\\C=\frac{616}{7}\ cm\\\\C=\frac{88}{1}\ cm$

c. Substitute the radius into the formula but this time you must use the  π button in the calculator:

 $C=2\pi (14\ cm)\\\\C=87.964 \ cm$

Rounded to the nearest hundreth, this is:

$C=87.96 \ cm$