SOLUTION: Re: Width of a crater if cits circumference is 12.3 miles: 12.3 (C) = 3.14d 12.3 3.14d ---- = ----- 3.14 3.14d = 3.9 width

Question 62329: Re: Width of a crater if cits circumference is 12.3 miles:
12.3 (C) = 3.14d
12.3 3.14d
---- = -----
3.14 3.14d
= 3.9 width
Answer by 303795(602) (Show Source): You can put this solution on YOUR website!
Re: Width of a crater if cits circumference is 12.3 miles:
12.3 (C) = 3.14d
12.3 3.14d
---- = -----
3.14 3.14d
= 3.9 width

This is already solved. I will try to explain what has happened in each step to maybe make it clearer.
The formula for cicumference is
The width of the crater is another way of describing the diamter of a circle. In this problem we need to use the formula to find the diameter.
You know that the circumference of the crater is 12.3 miles. Your formula therefore becomes
divide both sides of the equation by Pi

Use the value of Pi which you normally use (3.14 or the Pi button on the calculator etc).
Using posted problem as it is written shows that the answer would be 3.9 miles.

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