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Q: What is the circumferance of a circle if the diameter is 19?

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It is approx 19 units of length.

The circumferance is found by using the formula 2(r)(pi). r stands for the radius. The diameter, which is already given in the problem, is two time radius. Therefore the only thing you really have to do is multiple the diameter= 3 inches by pi. Circumferance is 9.425 inches.

The diameter of a circle is twice its radius, or 2r.

The diameter of any circle is twice the radius. Hence, for this particular circle, the diameter is 106.

Using pi as 3.14, the diameter of the circle is approximately 39.490446

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diameter x pi

The formula is pi multiplied by the diameter

Diameter of circle: 13/pi = 4.138 ft to 3 decimal places

It is the distance around a circle and is found by 2*pi*radius or diameter*pi

What is 27 X 3.14? 27 pi

36/pi = 11.4591559 inches

circumference = pi*diameter so diameter = circumference/pi = 19.1 metres.

If the diameter is known, don't bother measuring the circumference.Simply multiply the diameter by 'pi'.

The circumference of any circle is the irrational number "pi" (very approximately 3.1418) times the diameter of the circle.

Either pi times the diameter or pi times twice the radius (which is the diameter)

Just over 25' ( 8 x pi)

39 inches / pi = 12.4 inches

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