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Subjects>Math>Geometry

What is formula for figuring diameter of a circle?

Anonymous

∙ 13y ago

Updated: 4/28/2022

diameter = circumference / pi

diameter = radius * 2

Wiki User

∙ 13y ago

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Continue Learning about Geometry

What is the mathematical formula for finding the radius of a circle?

To calculate this you will need the diameter of the circle. The formula is: diameter/2*pi If you don't know the diameter you can also use the area of the circle: Sqrt(Area/pi) = radius

If the diameter of the circle is 69mm then what is the circumference of this circle?

To find the circumference of a circle, you can use the formula C = πd, where C is the circumference, π is a constant approximately equal to 3.14159, and d is the diameter of the circle. Given that the diameter of the circle is 69mm, you can substitute this value into the formula: C = π * 69mm ≈ 216.769mm. Therefore, the circumference of the circle is approximately 216.769mm.

What is the diameter if the circumference is 84?

To find the diameter of a circle when given the circumference, you can use the formula: circumference = π * diameter. Given a circumference of 84 units, you can plug this value into the formula and solve for the diameter. Dividing 84 by π gives you approximately 26.67 units as the diameter of the circle.

What is the area of a circle that has a diameter of 34 ft?

Divide the diameter by 2 to get the radius. Then use the standard formula for the area of a circle.

What is the formula for a circle radius r?

Area of a circle = pi*radius2 Circumference of a circle = 2*pi*radius or diameter*pi Diameter of a circle = 2*radius

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