If a piece of metal is 8 feet long what would the diameter be if it was bent into a circle?

If a piece of metal is 8 feet long what would the diameter be if it was bent into a circle?
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Answer :

You want the formula for the diameter (2r) if you have the circumference? If the formula for circumference is 2(pi)r, you simply do the algebra to determine r c=2(pi)r. Divide both sides of the equation by r and you have c/r=2(pi). Then divide both sides by r and you have c=2pi/r
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