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pi is the ratio of a circle's diameter (the distance across it) to its circumference (the distance around it).

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14y ago

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How you use pi in school?

To find the diameter of a circle, you use pi to find the radius, because the middle of a circle is pi.


Why do people use Pi?

people use pi to find the circumference of a circle.


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 are the two formulae you can use to find the circumference of a circle?

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


How do you find the area of a circle if you have the cicumfrence?

Divide the circumference by 2*pi which then will give you the radius and use pi*radius2 to find the area of the circle


How do you find the circumfrence of a circle when you have the area?

Divide the area by pi then square root your answer which will give the radius of the circle and use 2*pi*radius to find the circumference.


What formula will you use to find the circumference of a circle whose diameter is 2.2h?

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


How can you use pi?

You need Pi to find the radius or circumference of a circle and there are many more uses!


How do you find the bottom half of a circle?

To find the area of half a circle, use the formula for a circle pi*r^2 divided by 2. pi = 3.14, r = radius (half the distance across the circle)


What is the mathematical equation you generally use to find the circumference of a circle when you know the diameter?

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


What formula do you use to find the perimiter of a circle?

2 * pi * r


How do you Find the area of a circle with a radius of 6ft?

Use this equation to find the area of a circleA=pi*r^2where r is the radius of the circle and A is the areaA=pi*6^2A=pi*36≈113 feet