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1) First, Measure the Diameter. The diameter is the distance across a circle. It can be be seen as cutting a circle in half.
2) When the diameter is too large to determine, estimate the radius. The radius can be seen as half of the diameter. Once you picture the radius, multiply it by 2.
3) Now you may find the Circumference. Once you find the Diameter of a circle, you multiply it by pi. Pi is the value of 3.14 . Once you multiply the Diameter by pi, you find the Circumference! For example, if a jogger estimated diameter of a circular path as 200 meters across, then circumference would be 200 times 3.14 .
4) Make sure to verify your units of measurement. If your Diameter is in meters, your circumference must be in meters also.
You just found the Circumference of a circle!!!
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What is the circumference of a circle with the radius of 43?
Circumference = 2pi*r Circumference = 86pi
Circumference in a sentence?
circumference of the tire.
What is the circumference of 7.8cm?
circumference = 24.5
If circle circumference is 12 what is the radius?
Circumference = 12Diameter = Circumference/piRadius = Diameter/2 = circumference/(2 pi) = 1.9099 (rounded)
How do you find a radius if you have the circumference?
You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).
What is the circumference of a loonie?
A circumference is 4
Is the radius one fourth of the circumference?
No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)
Why is circumference equal to 2 times Pi times r?
Circumference = pi times diameter or Circumference= two x pi x radius. Now remember the diameter of a circle is the straight line from one edge of the circle, through the centre to the opposite edge. The straight line from the edge to the centre is the radius, and then from the centre to the opposite edge is another radius. So the diameter is the length of two radii. Algebraically express as d = 2r. So Algebraically C = pi*d Substituting the 'd' for '2r' C = pi2r However in algebra coefficient numbers are expressed to the left. Hence C = 2pir Why 'C' is this expression I would have to go into some 'very heavy' differential calculus. Suffice it to say, the ancients found that the circumference traced by a donkey/mule driving water out of well was directly proportional to the diameter, twice the length of the tether(2 radii). From this they discovered that for however long the the tether and the circumference were. they had a constant of proportion C directly related to diameter. This is equated to C = kd And k = C/d , which was founf to be 3.141592..... which now call 'pi'. for any sized circle. So today in school you learn C = pi d or C = 2 pi r And for circular area(A) A = pi r^(2) The 'pi' youare given in school is proabably 3.14 , 3.1416 or 22/7 . However, these values are Approximatons, because 'pi' is an irrational number. Hope that helps!!!!!!
What is the circumference of a circle with the radius of 43?
Circumference = 2pi*r Circumference = 86pi
What is the formula of a circumference?
circumference=r2pi
Circumference in a sentence?
circumference of the tire.
What is the circumference of 7.8cm?
circumference = 24.5
If circle circumference is 12 what is the radius?
Circumference = 12Diameter = Circumference/piRadius = Diameter/2 = circumference/(2 pi) = 1.9099 (rounded)
What definition of circumference?
The circumference is the distance around a closed curve. Circumference is a special perimeter.
What is the relationship between diamter and circumference?
circumference = pi*diameter or pi = circumference/diameter
Circumference circle of 8ft?
25.13 feet is the circumference. (diameter x pi = circumference).
Sentence for circumference?
The hole circumference was 12in. long >.<
