well if the radius is given then the diameter is : d=2r.
as for in a circle the diameter is : d=2(pi)r
pi=3.14
Using the Circumference And Area.
Circumference = 2*pi*radius
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).
there is no constant that will calculate this, since circumference is calculated with only radius and area with radius squared. you will have to calculate the radius using the initial circumference and then the radius again for the new circumference (with the 50 added). then calculate an area for each radius..then you can see the increase.
Circumference of a circle = 2*pi*radius or diameter*pi
Using the Circumference And Area.
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
Circumference = 2*pi*radius
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).
The circumference of a circle when the diameter is 30 is: 94.25
there is no constant that will calculate this, since circumference is calculated with only radius and area with radius squared. you will have to calculate the radius using the initial circumference and then the radius again for the new circumference (with the 50 added). then calculate an area for each radius..then you can see the increase.
Circumference of a circle = 2*pi*radius or diameter*pi
circumference of a circle = pi*diameter or 2*pi*radius
The circumference C of any circle is equal to pi*diameter. The diameter is equal to the radius times 2. So, for a circle with radius 48, it has a diameter of 96, and a circumference of 96*3.14=301.44. This of course is using 3.14 as an estimate for pi.
To calculate the circumference and area of a circle, you need the radius (r) or diameter (d). The circumference (C) is given by the formula ( C = 2\pi r ) or ( C = \pi d ). The area (A) is calculated using the formula ( A = \pi r^2 ). If you provide the radius or diameter in centimeters, I can give you the specific values for circumference and area.
Because the ratio of the circumference to the diameter of every circle is pi. So circumference = pi*diameter.
The diameter of a circle can be calculated using the formula ( D = 2r ), where ( D ) is the diameter and ( r ) is the radius of the circle. Alternatively, if you know the circumference ( C ), you can use the formula ( D = \frac{C}{\pi} ), where ( \pi ) is approximately 3.14159. Thus, the diameter is twice the radius or the circumference divided by pi.