Circumference means perimeter for a circle. To find the circumference, we need to multiply the diameter of a circle by Pi. I am going to tell you what is a diameter and what is Pi and how to find the circumference of a circle.
Diameter is the length of a line that goes through the middle of a circle. This line shows how fat the circle is. Diameter is like two radiuses. A radius is the length of a line going from the center of the circle to its edge.
Pi is a magic number. When people were measuring the circumference of circles and compared it to the radius, this number kept on showing up. So when they divided the circumference of any circle by its radius, they kept on getting 3. And when the calculation got more precise, it was not actually 3. It was 3.14159265359... and it kept on going. They decided to name it π. This is a Greek letter Pi.
To find the circumference, first we need to know the radius. That could be any number. Mine will be 4. Then, we multiply the radius times 2 to find the diameter, so mine is 8. To get the circumference, we multiply the diameter times Pi, so a circle with a radius of 4 will have the circumference of 4x2xPi=8Pi or about 25.13
This is how you find the circumference of a circle.
Diameter is the length of a line that goes through the middle of a circle. This line shows how fat the circle is. Diameter is like two radiuses. A radius is the length of a line going from the center of the circle to its edge.
Pi is a magic number. When people were measuring the circumference of circles and compared it to the radius, this number kept on showing up. So when they divided the circumference of any circle by its radius, they kept on getting 3. And when the calculation got more precise, it was not actually 3. It was 3.14159265359... and it kept on going. They decided to name it π. This is a Greek letter Pi.
To find the circumference, first we need to know the radius. That could be any number. Mine will be 4. Then, we multiply the radius times 2 to find the diameter, so mine is 8. To get the circumference, we multiply the diameter times Pi, so a circle with a radius of 4 will have the circumference of 4x2xPi=8Pi or about 25.13
This is how you find the circumference of a circle.
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