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The circumference (not circumfrence!) is given by the equation
C = 2*pi*r where r is the radius.
So r = C/(2*pi) where pi is the irrational number that is approx 3.14159 or even more approximately, 3.14.
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How do you find the radius of a circle if you know the circumfrence?
radius = circumference/(2*pi)
How do you find the circumfrence of a circle if you have the radius?
the circumfrence of a circle is pi times it's radius squared.
How do you find circumference given the radius?
Remember the eqution and comit to memory C = 2pir or C = pi d Where 'C' is the circumference 'r' is the radius 'd' is the diamter. and 'pi' is the constant of proportion of circles at 3.141592.... usually approximated to 3.14 e.g. If the radius is 5 Then C = 2 * 3.14 * 5 C = 10*3.14 C = 31.4
How do you find the radius of a cylinder given only the height?
The radius of a cylinder given only the height could be anything you like.
How do you find radius of curvature if focal length is given?
radius of curvature = 2Focal length
Given a circle with a radius of 4 which is the circumfrence?
25.1
How do you find the radius of a circle if you know the circumfrence?
radius = circumference/(2*pi)
How do you find the circumfrence of a circle if you have the radius?
the circumfrence of a circle is pi times it's radius squared.
What is the formula for the circumference of a circle given a radius?
Circumfrence=diameter X 3.14 (diameter=2 X radius)
How do you find the circumfrence of a circle with the radius?
two times the radius times pi
What is the radius of a circle if given the circumfrence?
The circumference (c) of a circle = 2πr (where r = radius). Therefore if you know the circumference, the radius (r) = c/2π.
How do you find the radius of a circle if you don't have the area?
If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.
What is circumfrence and how do you find it?
The circumfrence is like a perimeter. It is the area around a circle. You can find the circumfrence of a circle by using this formula. Pi x R2 or Pi times the radius squared.
A bicycle wheel is about 26 inches in diameter find its radius circumference and area?
radius=13 area=40.82 circumfrence=8.28025477707
How do you find the circumfrence of a circle when you have the area?
Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.
What is the circumfrence of a circle with a radius of 6?
18.84
How Do you find the circumfrence when you know the radius?
Pi x the diameter of the circle will hive you the circumference. The diameter is double the radius so the answer to your question is pi2r.
