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The equation for circumfrance is 2(pi)r (pi meaning the constant 3.14159, rounded). To find the radius if the circumfrance is known, you would re-arrange this equation to solve for r - it would go from C=2(pi)r into r=C/2(pi).
c = circumference, r = radius.
If the circumference is 2*pi*r, then r = c/(2*pi)=
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How do you calculate circumference and area of pi?
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
What is the area of a circle in terms of its circumference?
Using the circumference, you would find the radius first. The circumference C = 2*Pi*r where r is the radius. Then, the area of the circle = Pi*r^2.
How do you find the area of a circle using circumference?
Circumference = 2*radius Area = 2*pi*radius2 Area = 2*pi*(circumference/2)2
How do i work out the circumference of a circle from the radius?
The circumference of a circle with a known radius and can calculated using the following formula: C = 2Π(r)
How do you show your work to go with how to find the circumference of a circle if the radius is 5?
Circumference = 2*pi*radius In this case radius = 5 units so circumference = 31.4159 units approx.
