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Why would you use a formula to determine the circumference of a circle?
Wiki User
∙ 7y ago
There is a constant relationship between the radius of a circle and its circumference. This is expressed in a formula.
Wiki User
∙ 7y ago
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What is the perimeter of a circle with a diameter of 8 inches?
The perimeter of a circle is called its circumference. The formula for calculating the circumference is: C = πd (pi x diameter).In this case, this would be 8 in. x 3.14... or about 25.13 inches.
The circumference is 87.5 cm what is the diameter?
the circumference is NOT from one side of the circle to the other!The circumference of a circle is the distance around a circle (like its perimeter). The formula for that would be C=pi*d, where C is your circumference, and d is your diameter.Therefore, if 87.5=pi*d, just divide 87.5 by pi (I will use 3.14), and get a rounded answer of 27.87 cm for the diameter.
Area of a Circle using Function in C?
To find the area of a circle using the circumference, you need to use the formula Area=Circumference squared divided by four times pi. For this type of equation, pi would be equal to 3.14.
In a circle the circumference and diameter vary directly Which of the following equations would allow you to find the diameter of a circle with a circumference of 154 if you know that in a second ci?
In a circle, the circumference and diameter vary directly. Which of the following equations would allow you to find the diameter of a circle with a circumference of 154 if you know that in a second circle the diameter is 14 when the circumference is 44?
What is the circumference of the circle if the diameter needs to be 8 centimeters?
A circle with a diameter of 8 would have the circumference of 2.54. This is the measurement inside the circle.
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 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 circumference of a circle with a diameter of 27?
The circumference of a circle can be calculated using the formula C = π * d, where C is the circumference and d is the diameter. In this case, the diameter is 27, so the circumference would be approximately 84.78 units (assuming π is rounded to 3.14).
How can you determine the circumference of a circle if you know it diameter?
The circumference of a circle (C) is the diameter (D) times pi (approximately 3.14 or 22/7). So, the equation would be: C=D*3.14. For example, if the diameter was 4', the circumference would be 12.56'.
What is the area of a circle with a circumference of 2 units?
You would need to include the radius to be able to determine the area.
If the area of a circle is 201.06 then the circumference of the circle is?
The circumference would be 50.265
How do you find the diameter without the circumference?
The diameter of a circle can be found without the circumference using the formula d = 2r. This formula requires that you know the radius of the circle which is half of the diameter. To calculate the diameter you need to multiply the radius by 2. For example if the radius of the circle is 4 then the diameter would be 8 (4 x 2 = 8).You can also find the diameter of a circle if you know the circumference. To do this use the formula c = d. By rearranging the equation you can calculate the diameter as d = c/. For example if the circumference of the circle is 12.5 the diameter would be 4 (12.5/ = 4).
How do you find the circumference with no radius or diameter?
They would have to give you enough information to eventually get the diameter. If they gave you the area of a circle and asked for the circumference, you can determine the radius, and from the radius the diameter, and then the circumference. If they said "What is the circumference if the area of a circle is 36pi?" Area of a circle is pi*r2, which would give us a value for r = 6 Diameter is 2*r, or = 12. Circumference is d*pi, or 12pi
