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Circumference equals pi times the diameter, so you would divide by pi. (3.14159265...)

Q: How do you figure out the diameter if they only show circumference?

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diameter: you have stated that it is 3.14 radius: half the diameter, therefore 1.57 circumference: pi times the diameter, therefore 3.14 x 3.14 = 9.86 area: pi times the radius squared, therefore 3.14 x 2.46 = 7.72

Circumference of the circle: 2*pi*9 = 18*pi cm

A 7 mm diameter circle is the equivalent of a circle with a 0.275-inch diameter.

I thought circumference is only with circles Absolutely correct, but even if you consider the perimeter, which is conceptually similar, there is no answer. A rectangle with an area of 24 could be 4*6 with a perimeter of 20 or it could be 1*24 with a perimeter of 50 or 0.5*48 with a perimeter of 97 etc

The question is in really bad english, but I'm guessing your meant: 'How do I work out the diameter using pi?' Diameter= Radius2 You don't need to use Pi to work out the diameter. Unless you have a question that doesn't show you the radius. Then you do Area divided by Pi which equals the Diameter.

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Diameter- 128 / pi = 40.7436654 or 41 feet, I had this on my homework, do you know how to show the work though? Tricky.

diameter: you have stated that it is 3.14 radius: half the diameter, therefore 1.57 circumference: pi times the diameter, therefore 3.14 x 3.14 = 9.86 area: pi times the radius squared, therefore 3.14 x 2.46 = 7.72

Perform and write down each of these steps: -- Multiply the radius of the circular end of the cylinder by 2 to get its diameter. -- Multiply the diameter of the cylinder's round end by (pi) to get its circumference. -- Multiply the circumference of the cylinder's round end by its length. -- Point out that the result is 282.6 .

Square the radius and multiply the result by 3.14. You may want additional digits of pi for greater precision, but that's the basic idea.The formula is πr² (that's "pi r squared," if the character doesn't show up properly).ANSWER:The above answer is wrong! The above gives the area of a circle, not the circumference. Besides pie are round, cornbread are square. Pi = 3.1416 as stated above.The circumference of a circle is 2 times the radius times pi .This is because pi for all circles is the circumference divided by the diameter. So, pi times the diameter equals the circumference. The diameter is twice the radius.

64

Only idiots cant figure it out

diameter = pi / circumference diameter = 72 / 3.1415926 = 22.918312 inches ************* You've reversed the substitutions for the variables from your first line in the second line (pi/72 is 0.04365, not 22.918312). Although your value for the diameter is OK, your formula does not support it. The formula for circumference is C=2*pi*r (read as "C=two pi R"), or more simply, C=pi*d. Therefore, if both sides are divided by pi (to get d on one side of the equation only) you get C/pi=d. Using the value given for C and if pi is rounded to 3.14159, the answer is d=72/3.14159; d=22.91833 I went to that length to show how to restate the standard equation. That ability is a fundamental skill in math, and I'd hazard to guess that the asker could have figured out the answer if someone had shown them how to do that. If not, then maybe it will help someone else in the future.

Circumference of the circle: 2*pi*9 = 18*pi cm

Circumference = 2*pi*radius In this case radius = 5 units so circumference = 31.4159 units approx.

hell no

Never mind!

It is a closed figure