Pi Concepts

What is the value of Pi to two decimal places?

• 3.14

• 2.14

• 4.13

• 3.41

Pi is the ratio of a circle's circumference to its what?

• Diameter

• Radius

• Area

• Volume

Which of the following is an irrational number?

• 2

• Pi

If the diameter of a circle is 10 units, what is the circumference?

• 20 units

• 31.4 units

• 62.8 units

• 15.7 units

Pi Day is celebrated on which date?

• March 14th

• April 14th

• May 14th

• June 14th

Which of the following is a correct representation of Pi?

• 22/7

• 7/22

• 3.14159

• Both A and C

• Diameter

• Circumference

• Radius

• Volume

Which of the following is NOT true about Pi?

• It is a rational number.

• It is used in the formula for the circumference of a circle.

• It has an infinite number of digits.

• It is approximately equal to 3.14.

If the radius of a circle is doubled, by what factor does the circumference increase?

• 2

• 4

• 8

What is the approximate area of a circle with a radius of 4 units?

• 50.24 square units

• 25.12 square units

• 12.56 square units

• 100.48 square units