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

a.
`C=28\pi \ cm`

b.
`C=(88)/(1)\ cm`

c.
`C=87.96 \ cm`

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=(22)/(7)` ) and then evaluate. So you get:

`C=2((22)/(7))(14\ cm)\\\\C=(616)/(7)\ cm\\\\C=(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`