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Radius is half of the diameter, so you can easily come up with a formula:

L = 0.25 * pi * d2

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Q: Formula to find circumferance given diameter?
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What is diameter of a 130mm circumferance?

To find the diameter of a circle given its circumference, you can use the formula: diameter = circumference / π. In this case, the circumference is 130mm. So, the diameter would be 130mm / π ≈ 41.34mm.


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 diameter of a circle whose circumference is 47.1cm?

To find the diameter of a circle with a given circumference, you can use the formula: circumference = π * diameter. Given a circumference of 47.1 cm, you can rearrange the formula to solve for the diameter. Divide the circumference by π (approximately 3.14159) to find the diameter. Therefore, the diameter of a circle with a circumference of 47.1 cm is approximately 15 cm.


How do you find a radius given the diameter?

The radius is one half of the diameter. If the diameter is 20, the diameter is 10.


What is the diameter of a circle whose area is 314 cm square?

To find the diameter of a circle with a given area, you first need to calculate the radius using the formula for the area of a circle: A = πr^2. Given that the area is 314 cm^2, you can rearrange the formula to solve for the radius, which would be √(A/π). Plugging in the area, you get √(314/π) ≈ 10 cm. Finally, to find the diameter, you double the radius, resulting in a diameter of approximately 20 cm.

Related questions

What is diameter of a 130mm circumferance?

To find the diameter of a circle given its circumference, you can use the formula: diameter = circumference / π. In this case, the circumference is 130mm. So, the diameter would be 130mm / π ≈ 41.34mm.


What is the formula to find the circumference of a circle with the diameter given?

Circumference = (diameter) multiplied by (pi)


What is the formula to find the circumference of a circle when the diameter is given?

(pi)D


What is the formula to find circumference when you are given the radius?

To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi


What is the formula to find volume when diameter and length are given?

That depends what shape you are talking about.


If you are given a radius and asked to find the diameter what do you do?

You just multiply the given radius by 2. That is diameter is just double of the radius. This is universal formula.


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 diameter of a circle whose circumference is 47.1cm?

To find the diameter of a circle with a given circumference, you can use the formula: circumference = π * diameter. Given a circumference of 47.1 cm, you can rearrange the formula to solve for the diameter. Divide the circumference by π (approximately 3.14159) to find the diameter. Therefore, the diameter of a circle with a circumference of 47.1 cm is approximately 15 cm.


What is the formula to find the area of a circle with with a diameter?

if you are given a diameter divide it by two to get the radius! From then on, it is just simple Pi R Squared


What is the diameter of a circle with a 120 inch circumference?

To find the diameter of a circle with a given circumference, you can use the formula: circumference = π * diameter. Given the circumference of 120 inches, you can plug this into the formula: 120 = π * diameter. Solving for diameter, you get diameter = 120 / π ≈ 38.2 inches.


How do you find the diameter of a sphere with a given volume?

Make the radius the subject of the formula 4/3*pi* radius3 = volume and then double it to give the diameter.


What is the diameter of a 7 circumference?

When you are given the circumference of a circle asked to find the diameter, divide the circumference by pi. The formula for circumference is pi x diameter, so the formula for diameter is circumference divided by pi. So 7 divided by pi equals about 2.22.