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To find the circumfrance of a circle, you need to multiply 2 times pi, times the circle's radius. If you don't know what that is, you multiply two times pi, and pi equals 3.14, and then multiply that by the radius, which is the measurement of half the circl'e diameter. the diameter is the distance from one side of the circle, to the exact opposite. you measure this with a ruler. HALF the measurement of the diameter is the radius. Example---the diameter of a circle is 20 cm. half the diameter is 10 cm, which is the radius. Multiply 2 times pi[which equals 3.14], times the radius. Good luck!
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What is the radius of a circle if the circumfrance is 31.4?
If the circumference (not circumfrance) is 31.4, the radius is 4.9975 units (to 4 dp).
How do you work out the circumfrance of a circle?
You press pi button on the calculator or type in 3.14 you then times it by the radius then square it. :) x
Pi is the ratio of a circles circumfrance to its what?
diameter ------------- Diameter. The R (radius) of a circle multiplied by two equals the diameter.
How do you find the area circumfrance and the diameter of a circle?
Formula for area: A = Pi*R² (Pi = 3,1416 and R² is the radius multiplied by itself) Formula for circumference: C + Pi*D (D is diameter) Formula for Diameter: D = 2*R (radius multiplied by 2))
What is the circumfrance of a circle that is 50ft in diameter?
The formula for the circumference of a circle is π x d (diameter). Solution: C= π x d; C=3.1416 x 50; C=157.08 feet or 157 feet (rounded to nearest whole number).
