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

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Q: How do you calculate the circumfrerence of a circle?
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What is the circumfrerence of a circle if the radius is 3.5?

7*pi which is about 22 units of measurement


How do you find the radius of you know the circumfrerence?

Divide the circumference by 2*pi will give the radius of the circle.


Where is earths circumfrerence greatest?

at the equator.


Pi can be used to calculate the blank of a circle?

Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle


How can you find the circumference of a cylinder?

Diameter * pi (3.14159...) = circumfrerence


How do you work out the circumfrerence of a circle?

Find the diameter of the circle, which is the length from one side of the circle to the other (in the exact centre, of course.) Multiply this number by Pi, which is a number somewhere between 3 and 4 (it starts out as 3.141, but the decimals go on infinitely.) The circumference of the circle is then - assuming the diameter is 2 - 6.282, because that is the answer to 2 x π (π represents Pi.)


How do you calculate the are of a circle?

To calculate the area of a circle use this formula: pi x r2.


How do you calculate the radius of a circle?

Radius of a circle is half the diameter. For any given circle draw a straight line from one point on the circulference, through the circle centre, to the opposite point on the circu,afenrece. Then taking a rule measure the straight line distance. That is the diameter(d) Half of this distance, that from the circle dentre to the circumference is the radius(r). r + r = d or 2r = d or r = d/2 From this straight line we can calculate both the area (A)and the circuference(C) by using the following eq'ns/ C = 2pir = pi*d A = pi *r^(2) 'pi' is a constant for all circles. and the number 3.14 or 3.1416 or 22/7 are used in these APPROXIMATIONS.


How do you calculate t radius of the circle?

Radius of a circle = diameter/2


How do you find circumfrerence if you know the radius?

Multiply the radius by 2 and multiply the result by 3.141592654....(pi)


How do you calculate linear footage for a circle?

Width Of Circle X 3.14 or PII


What is the formula to calculate the volume of a circle?

A circle is two dimensional, it has area but not volume.