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Subjects>Math>Geometry

How do you figure out the circumference of a circle?

Anonymous

∙ 15y ago

Updated: 4/28/2022

Take "pi" times the diameter of the circle.

Pi = 3.14159 (ALWAYS)

If circle has a diameter of 10cm, circumference 31.41cm

If circle has a radius of 2inches, the circumference is 12.57 inches. (radius = 2, diameter = 4)

Wiki User

∙ 15y ago

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Continue Learning about Geometry

How do you figure the diameter of a circle from its circumference?

The circumference = pi x r2, and the diameter = 2r. So if you start with the circumference, you divide that number by pi (3.1416), then take the square root. What's left is the value of the circle's radius; double it to get the diameter.

What is the exact radius of a circle with the circumference of thrity six meters?

My understanding is that as the measurement of the circumference of a circle is derived from an equation using "pi" with pi being an indefinite number, the measurement of the circumference of a circle is also an indefinite number, but the figure can be rounded back to a predetermined number of decimal places.

How do you figure out diameter?

Assuming you are talking about a circle:* If you know the radius of the circle, multiply that by 2. * If you know the circumference of the circle, divide that by pi. * If you know nothing, you need to measure either the radius, the diameter, or the circumference.

What is the circumference of a 34mm circle?

The circumference of a 34mm circle is: 107 mm

What is the circumference of a circle with a diameter of 4.6?

The circumference of this circle is about 14.45 units.

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