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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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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 diameter of a circle with a 23 cm circumferance?

To find the diameter of a circle given its circumference, you can use the formula (C = \pi d), where (C) is the circumference and (d) is the diameter. Rearranging this formula gives (d = \frac{C}{\pi}). For a circumference of 23 cm, the diameter would be (d = \frac{23}{\pi} \approx 7.33) cm. Thus, the diameter of the circle is approximately 7.33 cm.


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.


Find the circumference when the diameter is 84cm?

To find the circumference of a circle when given the diameter, you can use the formula C = πd, where C is the circumference, π is pi (approximately 3.14159), and d is the diameter. Given the diameter of 84cm, you can plug this into the formula to get C = 3.14159 * 84 = 263.893cm. Therefore, the circumference of the circle is approximately 263.893cm.


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 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


How do you find radius of a cylinder if diameter is cm and height cm is given?

To find the radius of a cylinder when the diameter is given, simply divide the diameter by 2. The formula for radius ( r ) is ( r = \frac{d}{2} ), where ( d ) is the diameter. The height of the cylinder does not affect the radius calculation.


What is the diameter of a circle if the circumference is about 46 inches?

To find the diameter of a circle when given the circumference, you can use the formula: circumference = π * diameter. Given that the circumference is about 46 inches, you can plug this value into the formula: 46 = π * diameter. Solving for diameter, you get diameter ≈ 14.62 inches.