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Posted by **Anonymous** on Monday, September 30, 2013 at 9:28pm.

- Algebra 1-- I do not understand -
**Ms. Sue**, Monday, September 30, 2013 at 9:35pmC = pi * d

15 = 3.14 * d

15/3.14 = d

4.77707 = d

4.77707 / 2 = r

2.388535 = r

- Algebra 1-- I do not understand -
**Anonymous**, Monday, September 30, 2013 at 9:44pmI still don't understand this.

- Algebra 1-- I do not understand -
**Anonymous**, Monday, September 30, 2013 at 9:44pmCan you explain the steps in solving this formula?

- Algebra 1-- I do not understand -
**Ms. Sue**, Monday, September 30, 2013 at 9:51pmPlease copy and paste the line you don't understand.

- Algebra 1-- I do not understand -
**Anonymous**, Monday, September 30, 2013 at 9:52pmC = pi * d

15 = 3.14 * d

15/3.14 = d

4.77707 = d

4.77707 / 2 = r

I apologize, but I do not understand any of them.

- Algebra 1-- I do not understand -
**Ms. Sue**, Monday, September 30, 2013 at 9:54pmCircumference = pi * diameter

Then I substituted real numbers for the letters.

- Algebra 1-- I do not understand -
**Anonymous**, Monday, September 30, 2013 at 9:55pmHow did you know which numbers to use?

- Algebra 1-- I do not understand -
**Ms. Sue**, Monday, September 30, 2013 at 9:57pmPlease memorize pi = 3.154

Your problem stated that the circumference is 15.

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