PLZ HELP WILL MEDAL AND FAN

What is the exact diameter of an area rug with a circumference of thirty-six feet?

eighteen pi feet
eighteen divided by pi feet
thirty-six divided by pi feet
thirty-six pi feet

Question

PLZ HELP WILL MEDAL AND FAN


What is the exact diameter of an area rug with a circumference of thirty-six feet?
 	
	eighteen pi feet
	eighteen divided by pi feet
	thirty-six divided by pi feet
	thirty-six pi feet

marihelenh · Answer

$$C=(\pi)d$$

marihelenh · Answer

It is also equal to $$C=(\pi)r ^{2}$$
So, if you put 36 in for the circumference, you get
$$36=(\pi)r ^{2}$$

anonymous · Answer

thank you

marihelenh · Answer

From there you can square root both sides and get your answer.

marihelenh · Answer

Oh my goodness wait.

anonymous · Answer

mari you're wrong C=pi*d is the circumference while pi*r^2 is the area

marihelenh · Answer

I did that incorrectly. I realized what I did @RicardoDelfin 

So, @joannacaro123 the other equation is $$C=(\pi)2r$$

anonymous · Answer

so I multiply

marihelenh · Answer

You could put back 36 in for C. From there you would divide and get what r is equal to.

anonymous · Answer

so my answer is $$\frac{ 36 }{  } $$

anonymous · Answer

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marihelenh · Answer

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