Pi

MATH

before we begin let's get in some relevant Hebrew vocabulary so that we are advancing our Hebraic education in every circumstance

circumference
HeQeF הקף

radius
RaDYuX רדיוס

diameter
Qo9eR קוטר

r: The distance from the center of a circle to any point on the circle is called the radius.

d: The distance across and through the center of a circle is called the diameter.

The diameter is always equal to twice the radius.

If the radius is 3, the diameter is 2 × 3, or 6.

The circumference of a circle is the distance all the way around the outside edge of the circle. In other words, circumference is the name for a circle's perimeter.

A long time ago an Egyptian mind took a rope and cut it equal to the distance through the trunk of a tree. He cut another rope equal to the distance around the trunk of the tree. The rope that equaled the distance around the trunk was three times as long! But wait! Not exactly! It was a little over three times. This magic number is called pi or π. It has the approximate value of 3.14.

FORMULA FOR CIRCUMFERENCE OF A CIRCLE:
πd

FORMULA FOR AREA OF A CIRCLE:
πr^2