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Pi can be used to calculate the area of a circle

Pi can be used to calculate the circumference of a circle

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8y ago

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What are the specifications of the circle being used to calculate constant pi?

Any circle will work!


How is pi used to calculate the area of a circle?

π r 2 (pi times the radius squared)


Why is Pi used to calculate circumference and area of circles?

pi is an irrational number at 3.141592.... ( recur to infinity and decimals in no regular order. Let me tell you a story!!!! It was found by the 'Ancient Civilisations' that when a donkey is used to drive up water from well, it was tethered to a rope/halter, the radius. It walked round the well head tied to the halter. in a big circle, the circumference. It was found by the ancients, that twice the radius, the diamter, has a direct proportion to the circumference. It didn't how big/small the circumference was, compared to the radius/diameter the proportion always remained the same at 3.141592.... (pi). So the ancints constructed an equation. C is directly proportional to diameter ,d, This proportion is always constant hence a 'k' for constancy is inserted. C = kd or k = C/d This constant 'k' was given the name 'pi', which is the lower case Classical Greek letter 'p'. and stands for proportion. So ther you have it!!!!!


How do you calculate the circumfrerence of a circle?

Circumference of a circle = 2*pi*radius or pi*diameter


How do you calculate the perimeter of a circle?

The perimeter or circumference of a circle = 2*pi*radius or pi*diameter


How do you calculate the are of a circle?

To calculate the area of a circle use this formula: pi x r2.


What two numbers are divided to calculate pi?

Pi (π) is calculated as the ratio of a circle's circumference to its diameter. Therefore, the two numbers used to calculate pi are the circumference of the circle and its diameter. This relationship holds true for all circles, making pi a constant approximately equal to 3.14159.


What do pi have to do with math?

you use pi to calculate the area or circumference of a circle


How do you calculate the cross sectional area of a circle?

We can calculate the area of a circle by using the formula areacircle pi times r2. We know that pi is about 3.14 and r is the radius of the circle. Πr2 Where: Π pi (3.14159265...) r radius of circle


Does pi equal 180 degrees?

No, pi is a ratio, often simplified as 22/7, used to calculate areas of circles, etc.So, the area of a circle is pi times r2, where r = the radius of the circle.


How do you calculate circumference and area of pi?

Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius


What is the largest area that you can have if the perimeter is 24 feet?

You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.