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How do you find the radius using the circumference?
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)=
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
Why is pi used to measure circles?
Pi is the ratio of the circumference ( the perimeter) of a circle to its diameter. You might have learned in school that if C is the circumference of the circle., then C=2Pir or C=pixd from which we say pi = C/d or the ratio of the circumference of the circle to its diameter. This has been known since ancient times! William Jones gave us the symbol we currently use for it. This comes from the 16th letter in the Greek alphabet. So we use it to measure circles because of what it is.
What does pi in geometry mean?
Pi or π is a constant which represents the ratio of any circles's circumference to its diameter. which is always equal to 22/7 or 3.142any shape that has a curve in it (e.g circle) is related to pi....For example:1.area of a circle= πr22.perimeter of a circle= 2πr
How is pi used to find circumference of circles?
Pi times the diameter of a circle gives its circumference.
Is the ratio of a circumfrance to its diameter called pi?
yes
What do diameter and circumfrance have to do with pi?
In any circle, the ratio of circumference to diameter is (pi).
What is pi and how does it relate to the circumfrance?
The number pi is the ratio of the circumference and the diameter of a circle. In Euclidian ("flat") geometry, this ratio is the same for all circles. The number pi is approximately 3.1416. It also has many other uses in mathematics and physics, not all of which have an obvious relation to a circle or sphere.
What is the ratio of PI circles?
In a circle Pi it the ratio of the circumference to the diameter. That is to say, if C is the cirumference and D is the diamter of any circle, we have: Pi=C/D
What is the ratio to any circles circumference to the diameter?
The ratio of the circumference of a circle to its diameter is Pi. (3.14159)
Is the ratio of the circumference to the diameter is constant for any circles?
Yes, pi.
How do you figure out the circumfrance?
Circumference = 2*pi*radius or diameter*pi
What is a diamter?
it is the circumfrance of a circle divided by pi.
How do you findthe diameter if i have the circumfrance?
Divide the circumference by pi.
What is the similarity ratio for two circles with areas 2π m2 and 200π m2?
The similarity ratio of two circles can be determined by the ratio of their areas. Given the areas of the circles are 2π m² and 200π m², the ratio of the areas is ( \frac{2\pi}{200\pi} = \frac{2}{200} = \frac{1}{100} ). The similarity ratio, which is the square root of the area ratio, is therefore ( \sqrt{\frac{1}{100}} = \frac{1}{10} ). Thus, the similarity ratio of the two circles is ( 1:10 ).
Why is pi only associated with circles?
Pi comes up endlessly in mathematics, it is associated with a great many things other than circles. Of course, it is still true that pi by definition is the ratio of the circumference to the diameter of a circle.
How do you find the circumfrance if the diameter is given?
mutiply by pi 3.14159265.............................................
