Ratio of Circumference and Diameter Equal Pi

The ratio between the circumference and the diameter of a circle is ____

• Congruent

• Diameter

• Pi

• Like term

Pi is the relationship between a circle's diameter and its circumference. This relationship is always the same, and it's always pi. Pi is an irrational number, which means its decimals go on forever, but it is approximately _______.

• 7.23

• 100

• 3.14

• 1

In math, ______________ is the ratio of a circle's circumference to its diameter and is approximately 3.1416.

What is the radius of this circle?

• 18

• 10

• 9

• 8

The length around the outside of a circle is its ________.

What is the value of Pi?

• 3.14

• 22/7

• 3.14159265358979

• 3.1416

What is the ratio of the circumference to the diameter of any circle?

• 3.14

• 22/7

• 2.875

• 3.2

The ratio of the ___________________ and diameter equals pi.

To find the circumference you multiply the ______________ by pi.

Pi is approximately equal to ____________.