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What number is useful when finding the circumference of a circle?
Wiki User
∙ 9y ago
The value of Pi
Wiki User
∙ 9y ago
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How is pi useful?
the way to use pi is to find the circuference of a circle
How did mathematician figured out that the formula for circumference of a circle?
The ratio of any two lines in any picture is unchanged when you change the size of the picture. In the case of a circle, the ratio of circumference to diameter is called pi simply because pi has turned out to be a useful number in many applicaions.
Why is pi a useful number?
It is used to calculate the circumference and the area of a circle, the surface area and volume of a sphere, to calculate areas and volumes of some other geometrical figures, and in several applications in advanced math that are seemingly unrelated to the circle.
What is mean by pi in mathematics?
If you mean pi as in 3.14159... I can answer. Pi is a relationship that compares the circumference of a circle to the diameter of that same circle by division. In any circle, if you divide the length of the circumference of that circle by the length of its diameter you will get 3.14159... or pi. This can be very helpful to know because it is much easier to measure the diameter of a circle than to measure the distance around the circle (circumference). If you multiply the diameter by 3.14159... you will find the circumference. If C = circumference; D = diameter; pi = 3.14159 theses are some useful formulas: C = D X 3.14159 or D = C / 3.14159 or 3.14159 = C / D
What are some formulas that pi would be useful for?
calculating the circumference of a circle, it's area, it's perimeter, its diameter, radius, it's algebraic calculations of missing circle parts.
Why is finding prime factorization of a number useful?
It helps to reduce fractions.
How does chest circumference relate to lung functions?
Chest circumference does increase when the lungs are inflated. The best way to measure circumference in its true number is to measure it without holding in air. The measurement is useful for properly fitting clothing and the like.
What is pie in circle?
In mathematics, pi (π) is a mathematical constant that represents the ratio of a circle's circumference to its diameter. It is an irrational number, meaning it cannot be expressed as a finite decimal or a fraction. The value of pi is approximately 3.14159.
What is the diameter of 19.4 km in a circle?
The answer depends on what the 19.4 km refers to: the radius, the circumference or something else. Since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
When is it useful to know multiples of a number?
When reducing fractions to their lowest terms or finding the LCD of fractions
What does pi the formula in math stands for?
In certain formulas, including most that involve circles, you will see 'pi'. This pi always has the same value, approximately 3.14159... However, this number is irrational, which means it never terminates (ends) or repeats. But what exactly is pi? Pi is the ratio between any circle's circumference and its diameter. This ratio is always the same, no matter how big or small the circle is, but the degree of precision might vary depending on how big the circle is. Why is Pi useful? Pi allows us to calculate the diameter or area of any circle, but also has many other uses. In order to use these formulas, though, we need to define the terms we are using. Circumference - the distance around the circle Diameter - the length of a straight line segment that passes through the center of the circle Radius - the distance from the center of the circle to the circle itself To calculate the circumference, multiply the diameter by pi (3.14...) To calculate the area, square the radius, then multiply this by pi (3.14...) In symbols: Circumference = diameter x pi Area = (radius)2 x pi Hope this helped.
How are common multiples useful?
They are useful in finding the least common denominators.
