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There is a constant relationship between the radius of a circle and its circumference. This is expressed in a formula.

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What is the circumference of a 49 inch circle?

The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference, π is the mathematical constant pi (approximately 3.14159), and r is the radius of the circle. In this case, since the diameter of the circle is given as 49 inches, the radius would be half of the diameter, which is 24.5 inches. Plugging this value into the formula, the circumference of the 49-inch circle would be approximately 154.06 inches.


What is the circumference of a circle with a diameter of 5 cm?

The circumference of a circle can be calculated using 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. In this case, the diameter is 5 cm, so the circumference would be C = π * 5 cm = 15.70796 cm.


What is the circumference of a circle that is 4 ft?

Well, isn't that just a happy little question! To find the circumference of a circle, you can use the formula C = 2πr, where r is the radius of the circle. Since the diameter is twice the radius, if the circle has a diameter of 4 feet, the radius would be 2 feet. Plugging that into the formula, the circumference would be 4π feet.


What is the circumference of a circle if the diameter is 1 cm?

The formula to calculate the circumference of a circle is C = πd, where C is the circumference, π is approximately 3.14, and d is the diameter of the circle. If the diameter is 1 cm, then the circumference would be C = π(1) = 3.14 cm.


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

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.


Why would you use a formula to determine the circumference of a circle rather than measuring the circumference?

Because the circumference of a circle isn't a straight line its hard to measure, even if you have a flexi-ruler, your never going to be able to line it up to get an exact measurement. Therefore its much easier to measure the diameter and use the formula


What is th formula for the circunference of a circle?

π is the ratio between the diameter and the circumference of a circle so the formula would be : Circumference = π x Diameter or alternatively (since the radius is half the diameter) Circumference = 2π x Radius.


How do you get the radius of a circle from the circumfrance?

To find the radius of a circle when given the circumference, you should start with the formula for circumference, which is this: circumference = 2*pi*radius To solve for the radius, you would the have to divide the circumference by 2*pi leaving you with a formula like this: radius = circumference/(2*pi) pi≈3.14159


A circle has a radius of 7 centimeters What formula would you use to find the circumference?

circumference = 2*pi*7* centimeters


What is the circumference of a 49 inch circle?

The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference, π is the mathematical constant pi (approximately 3.14159), and r is the radius of the circle. In this case, since the diameter of the circle is given as 49 inches, the radius would be half of the diameter, which is 24.5 inches. Plugging this value into the formula, the circumference of the 49-inch circle would be approximately 154.06 inches.


What is the diameter of a circle whose circumference is 314?

The diameter of a circle whose circumference is 314 is about 1 (99.95).


What is the circumference of a circle of 24cm?

The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference and r is the radius of the circle. In this case, if the diameter of the circle is 24 cm, the radius would be half of that, which is 12 cm. Using the formula, we can calculate the circumference as follows: C = 2πr C = 2π(12 cm) C = 24π cm So, the circumference of a circle with a diameter of 24 cm is 24π cm.


What is the circumference and area of a circle that has a diameter of 10 feet?

The formula for circumference is 2 x pi x radius. For a circle of 10 feet, the cirumference would be 62.8 feet. The formula for area is pi x r2. For a circle of 10 feet, the radius would be 314.16 ft.


What is the diameter of a circle with a circumference of 49 centimeters?

Oh, dude, math time! So, the formula for finding the diameter of a circle from the circumference is dividing the circumference by π (pi). In this case, 49 divided by π is approximately 15.57 centimeters. So, the diameter of the circle is around 15.57 centimeters. Easy peasy, right?


What is the circumference of a circle with a diameter of 5 cm?

The circumference of a circle can be calculated using 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. In this case, the diameter is 5 cm, so the circumference would be C = π * 5 cm = 15.70796 cm.


What is the circumference of a circle that is 4 ft?

Well, isn't that just a happy little question! To find the circumference of a circle, you can use the formula C = 2πr, where r is the radius of the circle. Since the diameter is twice the radius, if the circle has a diameter of 4 feet, the radius would be 2 feet. Plugging that into the formula, the circumference would be 4π feet.