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d * pi

or 2 * r * pi

Where d is diameter and r is radius and pi = 3.14159

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Q: What's the formula to find the circumference of a circle?
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How do you find the of a circumference of circle in math?

the formula is: circumference= p*diameter


Whats the radius of a circle with circumference 30 cm?

To find the radius of a circle with a circumference of 30 cm, we can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given C = 30 cm, we can plug this value into the formula and solve for r. 30 = 2πr r = 30 / (2π) r ≈ 4.77 cm Therefore, the radius of the circle is approximately 4.77 cm.


What is circumference of a circle with 154 square inches?

Use the standard formula for the area of a circle to find out the circle's radius. Then multiply that by 2 x pi, to get the circumference.


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 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.

Related questions

How do find the circumference of a circle?

The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.


If the area of a circle is 201.06 then the circumference of the circle is?

The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.


How do you find the formula for the circumference of a circle?

Circle's circumference = 2*pi*radius or diameter*pi


How do you find the of a circumference of circle in math?

the formula is: circumference= p*diameter


How do you answer the formula of a circumference?

to find the circumference of a circle you do 2 times3.14timesthe radius


What formula do you use if you know the diameter of a circle and want to find the circumference?

circumference of a circle = pi * diameter.


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


Who discovered the formula of how to find out the circumference of a circle?

Archimedes


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

Circumference of a circle: 2 x pi x radius.


What is the circumference of a circle with a diameter of 18 in.?

The circumference of a circle with a diameter of 18 inches is 56.5 inches.


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

Circumference = (diameter) multiplied by (pi)


Whats the radius of a circle with circumference 30 cm?

To find the radius of a circle with a circumference of 30 cm, we can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given C = 30 cm, we can plug this value into the formula and solve for r. 30 = 2πr r = 30 / (2π) r ≈ 4.77 cm Therefore, the radius of the circle is approximately 4.77 cm.