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It depends on the information you have. If you remember the formulas for area and circumference, you can plug in what information you know in order to solve for the information you don't.
You can multiply the radius by 2.
If you are given the area, divide by pi (3.14) and then take the square root and multiply by 2.
If you are given the circumference, divide by pi (3.14).
The DIAMETER of a circle is any point on the circle to another point, straight across.
The RADIUS of a circle is like the diameter, only from any point, to the very middle.
To find AREA: multiply circumference by pi.
To find Diameter, multiply the radius by two.
to find radius: divide diameter by 2.
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How do I figure the area of a circle by diameter?
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
How can i find circumference if you know diameter?
Circumference = Pi * diameter
What is the circumference of a circle 7 feet using 3.14 for pi?
The circumference of a 7-foot diameter circle using 3.14 for Pi is: 21.98 feet (diameter x Pi = circumference).
What is the importance of pi?
the importance of pi is when u do have the diameter of a circle and u have the radius you can find the diameter of the circle and the circumference
How do you find the circumfrence of a circle with the diameter?
You multiply the diameter by pi, (Approximately 3.14159), so C=pi D.
