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Circumference of a circle = 2*pi*radius or pi*diameter.

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Q: How do you find a circumfernce with a radius?
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Related questions

How do you find the radius of a circle having the circumfernce?

Divide the circumference by Pi (3.14159), and that will give you the diameter. Divide that number by 2 to find the radius.


What is the formula for finding circumfernce?

circumference of a circle = 2*pi*radius or pi*diameter


What is the circumfernce of a circle 20 inches using 3.14?

Circumference of a circle = 2*pi*radius or pi*diameter


How to find the circumference of a circle?

It would be the radious squared times pi R2xpi (3.14) * * * * * The text is wrong, the formula is correct. The circumfernce is 2*π*radius or, since the diameter is double the radius, circumference = π*d π is an irrational number which is approximately 3.14


How do you find the radius of a circle if you already have to circumfernce?

the formula for the circumference is... C = 2 * (3.14159) * r (r in this equation is the radius) since you know what your circumference is all you do is put it on the left side of the equation for C. then you divide both the 2 and 3.14159 on both sides and then you have only r on the right side and you have your answer.


How do you find the diameter of a circle with the circumfernce size?

Divide the circumference by pi (~3.14) to get the diameter.


What is the radius of a circle whose circumference is 60π?

Circumfernce = 2*pi*r So 2*pi*r = 60*pi r = 30 units of length.


If a circle has a circumference is 5pi millimeters how do you find the area of the circle show your work also i do not have the radius or any other info?

Circumfernce = 5*pithat is, circumference = pi*d = 5*pi where d is the diameter.Therefore, circumference = 5 millimetres and so radius = d/2 = 2.5 mm.Now that the radius is known, area = pi*r^2 = 19.6 mm^2.


What is a circles radius if the circumfernce of a circle is 24 pei?

Circumference = 2 pi R = 24 piR = C / (2 pi) = (24 pi) / (2 pi) = 12


How do you find the circumfernce of a circle with pi if the diameter is 3.5?

Circumference = 2Пr = 2 x 3.14159 x 3.5/2 = 10.995565


How do you work out the circumfernce of a circle?

you can use 2 formulas... 2 x pi x radius or pi x diameter - dont forget that pi is always 3.14 unlsess said otherwise. :) hope this has helped.......


What is the circumfernce of a circle with a 13 ft diameter?

40.8407045