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The formula to figure out the circumference (area around the circle) of a circle is
pi(3.14) times radius^2 ( to the second power).
Now there are ways people can trick you like they give you the diameter but radius is 1/2 of the diameter so you have to divide the diameter by 2.
See this example:
A circle has a diameter of 12 feet. What is the area of the circle?
So now you would have two divide 12 by 2 which equals 6. 6^2=36
Now multiply 36 and 3.14 that would equal 113.04.
That is the area of the circle 113.04.
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How do you figure out the circumference of a circle?
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)
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
