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Diameter d = 2 × r
Diameter d = C / p
Diameter d = square root (4 A / pi)
Circumference C = 2 p x r = p × d = square root (4 pi × A)
Area A = pi × (d × d / 4) = C2 / (4 × pi)
Radius r
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What is the formula for finding the circumference of a circle with diameter?
PI times the DIAMETER
What is the formula of finding the radius of a sphere?
diameter/2
What is the formula of finding the circumference of the pipe?
diameter times 3.14159
What is the formula for finding perimeter of a circle?
The formula for the circumference of a circle is pi * diameter or (2 radius.)
What is the formula for finding the diameter of a circle?
two times the radius (d=2r)
What is the formula for finding the circumference of a circle with diameter?
PI times the DIAMETER
What is the formula of finding the radius of a sphere?
diameter/2
What is the formula of finding the circumference of the pipe?
diameter times 3.14159
What is the formula for finding circumferencE when only diameter is given?
Circumference of a circle = (pi) x (diameter)
What is the formula for finding perimeter of a circle?
The formula for the circumference of a circle is pi * diameter or (2 radius.)
What is the formula for finding the distance around A semicircle?
It is: (pi*radius)+(diameter)
What is the formula for finding the circumferance of a circle?
Either pi times the diameter or pi times twice the radius (which is the diameter)
What is the formula for finding the diameter of a circle?
two times the radius (d=2r)
What is the formula for finding circumfernce?
circumference of a circle = 2*pi*radius or pi*diameter
What is the formula for finding the radius of sphere?
1/2 diameter or the circumference/pi/2
What is the formula for finding the radius?
The formula for finding the radius of a circle is circumference divided by double of pi. If area is given instead of circumference, the radius may be found by dividing the area by pi, then finding the square root of the resultant quotient. It is also equal to half of the diameter, or the diameter divided by 2.
What is the mathematical formula for finding the radius of a circle?
To calculate this you will need the diameter of the circle. The formula is: diameter/2*pi If you don't know the diameter you can also use the area of the circle: Sqrt(Area/pi) = radius
