pi is the ratio of a circle's diameter (the distance across it) to its circumference (the distance around it).
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.
Circumference of a circle = pi*diameter or 2*pi*radius
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)
circumference of a circle = diameter*pi or 2*pi*radius
2 * pi * r
To find the diameter of a circle, you use pi to find the radius, because the middle of a circle is pi.
people use pi to find the circumference of a circle.
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.
Circumference of a circle = 2*pi*radius or pi*diameter
Divide the circumference by 2*pi which then will give you the radius and use pi*radius2 to find the area of the circle
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.
Circumference of a circle = pi*diameter or 2*pi*radius
You need Pi to find the radius or circumference of a circle and there are many more uses!
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)
circumference of a circle = diameter*pi or 2*pi*radius
2 * pi * r
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