Radius = r = 18
Area = Pi x r2 = Pi x 324 (= approximately 1018 square units)
Circumference = Pi x 2 x r = Pi x 36 (= approximately 113 linear units)
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 = 2*pi*radius Area = pi*radius2
The radius and area of a circle if the circumference is 157 are:r = 25A = 1,960
the equation to find circumference is C=2*pi*radius so when you have a radius of 18 inches, C=113.097
Area = π × radius² → radius² = area/π → radius = √(area/π) Circumference = 2 × π × radius = 2 × π × √(area/π) = √(2² × π² × area/π) = √(4 × π × area)
18/(2*pi) = a radius of about 113.09
circumference doesn't matter when solving for area..
28.26=area 18.84=circumference
Radius = square root of (area/pi) Circumference = 2*pi*radius
Circumference = 2Π• radius 2Π•9 = (18×Π)"≈ 56.5"
If a circle has a circumference of 18pi, the radius is 9.
pi*radius2 = area radius = square root of (area/pi) circumference = 2*pi*radius