what is the math equation for pi?
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The circumference of a circle is found with the formula C= π*d = 2*π*r. Thus pi equals a circle's circumference divided by its diameter. Plug your numbers into a calculator: the result should be roughly 3.14. Repeat this process with several different circles, and then average the results.
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the formula for circumference of a circle is 2 x pi x r(radius).
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pi/2 radians is equal to 90 degrees. here pi radian is equal to 180 degree. So pi/2 radians is equal to 90 degree.
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And π is the ration of circle's circumference to diameter. ... Since the radius is half the diameter, and pi is the ratio of the circumference to the diameter, there will be pi times two radians to the angle of a full circle. Thus, pi radians make a half circle.
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The d represents the measure of the diameter, and r represents the measure of the radius. The diameter is always twice the radius, so either form of the equation works. This formula reads, “Area equals pi are squared.” Find the radius, circumference, and area of a circle if its diameter is equal to 10 feet in length.
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Recall that pi is irrational, whose approximate value is 3.14. Therefore, 1/pi will be irrational and clearly 0 < 1/pi < 1. It should be obvious that 6 + 1/pi is irrational and it lies between 6 and 7.
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The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle). Simply divide the circumference by π and you will have the length of the diameter. The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle!
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Thus 2π radians is equal to 360 degrees, meaning that one radian is equal to 180/π degrees.
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The difference can be either irrational or rational. The difference between two pi and pi is pi, which is irrational. The difference between pi and pi +1 is one, which is rational. That depends -entirely- on what the numbers are.
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Value of pi Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. ... When starting off in math, students are introduced to pi as a value of 3.14 or 3.14159. Though it is an irrational number, some use rational expressions to estimate pi, like 22/7 of 333/106.
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Answer and Explanation: Yes, π is a complex number. By definition, a complex number is any number that can be written in the form a + bi, where a and b are real numbers,...
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Pi (Ratio of the Circumference of a Circle to Its Diameter) Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).
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Keeping this in mind, you can write down the formula for finding the circumference of a circle given the radius: C = 2πr. In this formula, "r" represents the radius of the circle. Again, you can plug π into your calculator to get its numeral value, which is a closer approximation of 3.14.
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Solve the equation for the diameter of the circle, d= C/π. In this example, "d = 12 / 3.14." or "The diameter is equal to twelve divided by 3.14." Divide the circumference by pi to get the answer.
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It relates the number pi to both the circumference and diameter. You can see that by dividing the circumference by the diameter, you will get the number pi.
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The circumference is the distance around the edge of the circle. The pi value is an irrational number approximately equal to 3.1416. ... Angles can be converted to radians as a measurement unit which is used in trigonometry by the formula one pi radian equals 180 degrees.
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Understanding the Area and Circumference of a Circle. Factoid: The area of a circle is pi (approximately 3.14) times the radius of the circle squared. The circumference is pi times the diameter. ... Keep reading to understand these formulas (or how to learn math).