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What is the circumfrence of a circle when the radius is 23.4534? And what is the area if the radius is 45.654?

 May 8, 2014

Best Answer 

 #1
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The circumfrence can be found with the formual C=pi*d; d being the diameter.

You are given the radius, which is half of the diameter. So multiply 23.4534 by 2.

Your diameter is 46.91

Now multiply your diameter by pi. 

Your circumfrence is approximately 147.36 units

 

The area can be found with the formula A=pi*r^2

Square the radius you are given, 45.654^2

That is approximately 2,084.29

Now multiply that by pi.

The area of the circle is approximately 6,547.98 units squared.

 May 9, 2014
 #1
avatar
+5
Best Answer

The circumfrence can be found with the formual C=pi*d; d being the diameter.

You are given the radius, which is half of the diameter. So multiply 23.4534 by 2.

Your diameter is 46.91

Now multiply your diameter by pi. 

Your circumfrence is approximately 147.36 units

 

The area can be found with the formula A=pi*r^2

Square the radius you are given, 45.654^2

That is approximately 2,084.29

Now multiply that by pi.

The area of the circle is approximately 6,547.98 units squared.

Guest May 9, 2014

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