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# What is pi used for?

**Pi is used to find the circumference and area of a circle.** It is also used to find the volume and surface area of a sphere, cone and cylinder. Pi has applications that go beyond geometry as well, such as statistics and probability.

For example, it is used for calculating normal distributions and the distribution of prime numbers. It is also used in Buffon’s Needle Problem. This proof determines the probability of a needle landing on a line when it is dropped onto a plane containing equally spaced parallel lines. Pi is also prominent in geometric constructions and some formulae involving limits.

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## What does pi stand for?

A: The number pi represents the ratio of a circle's circumference to its diameter. The ratio never changes for any circle. It is approximately valued at 3.14,... Full Answer >Filed Under: -
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## What is the value of pi?

A: The approximate value of pi, which is the ratio of a circle’s circumference to its diameter, is 3.14159265, according to Collins World English Dictionary. ... Full Answer >Filed Under: -
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## What are some math problems for 6th grade?

A: Math problems for 6th grade include calculating surface area of cubes and rectangular prisms, solving area and circumference of a circle and area of triang... Full Answer >Filed Under: -
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## What are the notable mathematical problems that feature pi?

A: Some mathematical problems that feature pi are the area of a circle, a circle's circumference, arc length and the different surface area and volume formula... Full Answer >Filed Under: