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Pi is used anytime there is a circular (as opposed to linear) geometry involved. Examples include circles, cylinders, spheres, and other cruves.

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Q: When is pi used in equations?
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What are 2 equations using pi?

Area of circle is pi x radius squared Circumference is p x diameter


What are some equations for a cylinder if the volume is 10000 liters?

Volume = pi*r2*h You have volume. so you could have two other equations finding radius and height. Radius: 10,000 Liters = pi*r2*h 10,000 Liters/pi*h = r2 sqrt(10,000 Liters/pi*h) = r ===============================


What is pi about?

Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.


Why is the period of trig equations important when solving trig equations?

Trigonometric equations often have infinitely many solutions, due to the periodicity of the functions. Take a simple example, sin x = 0. This equation is satisfied by an angle of zero, but also by an angle of pi, 2 x pi, 3 x pi, etc. (this is in radians; the equivalent in degrees would be 0°, 180°, 360°, etc.). Once you find two base solutions (in this case 0 and pi), repeatedly adding the length of the period (in this case, 2 pi, equivalent to 360°) will give you additional solutions.


Who introduced the pi symbol and in what year?

The identity of the person who introduced the symbol is somewhat ambiguous. It was used by the Welsh mathematician William Jones in 1706 (Palmariorum Matheseos), and it is possible that he used pi because it was the first [Greek] letter in periphery.However, Jones credits John Machin for his equations involving pi, and so it is possible that Machin used pi before Jones. In fact, there may have been others: Willam Oughtred used pi and delta to represent the periphery and diameter in 1647.But the use of pi did not really catch on until it was adoted by one of the most influential mathematician of all times: Leonhard Euler, in 1736.

Related questions

How does pi go?

Pi is 3.14159265415.... and so on and so forth. Pi is more commonly used as 3.14 in equations.


How was Einstein related to pi?

Einstein may have used pi (Ï€)in his equations but he had no involvement in the creation or application of pi.


What is the pi key on a telephone?

pi key on a TELEPHONE? I know of the pi on a calculator... but have never heard of a phone sporting this function. pi on a calculator is used to calculate areas of circles and many other mathematical equations. Pi goes on forever but the first few digits are 3.14159


Where did the math symbol pi in math come from?

several equations' answers come out to 3.14 and so on, thats pi


What are 2 equations using pi?

Area of circle is pi x radius squared Circumference is p x diameter


What are some equations for a cylinder if the volume is 10000 liters?

Volume = pi*r2*h You have volume. so you could have two other equations finding radius and height. Radius: 10,000 Liters = pi*r2*h 10,000 Liters/pi*h = r2 sqrt(10,000 Liters/pi*h) = r ===============================


What is pi about?

Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.


What is the diameter of a circle times pie?

Here are the three circle equations, in words and equations. Circumfwerence - pi X diameter C = pi d Circumference = two X pi X radius C = 2pi r Area = pi X radius squared A = pi r^(2) NB It is only the radial value that is squared ; NOT 'pi'. NB pi is a constant at 3.141592..., usually approximated to 3.14 or 3.1416.


WHAT is the Value of pi to 100 or decimals places What does pi have in the study of Geometry?

It is 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170680Pi is the ratio of the circumference of a circle to its diameter but also appears in the formula for its area. It appears in the corresponding equations for ellipses.Pi also appears in equations regarding the volume of bodies when a curve is rotated about an axis.Finally, pi is the basis of the radian measure of angles.


Why is the period of trig equations important when solving trig equations?

Trigonometric equations often have infinitely many solutions, due to the periodicity of the functions. Take a simple example, sin x = 0. This equation is satisfied by an angle of zero, but also by an angle of pi, 2 x pi, 3 x pi, etc. (this is in radians; the equivalent in degrees would be 0°, 180°, 360°, etc.). Once you find two base solutions (in this case 0 and pi), repeatedly adding the length of the period (in this case, 2 pi, equivalent to 360°) will give you additional solutions.


Who introduced the pi symbol and in what year?

The identity of the person who introduced the symbol is somewhat ambiguous. It was used by the Welsh mathematician William Jones in 1706 (Palmariorum Matheseos), and it is possible that he used pi because it was the first [Greek] letter in periphery.However, Jones credits John Machin for his equations involving pi, and so it is possible that Machin used pi before Jones. In fact, there may have been others: Willam Oughtred used pi and delta to represent the periphery and diameter in 1647.But the use of pi did not really catch on until it was adoted by one of the most influential mathematician of all times: Leonhard Euler, in 1736.


How are quadratic equations used in the real world?

There are many ways quadratic equations are used in the real world. These equations are used to calculate area, speed and profit