Circumference and Pi

Front

What is the formula to find the diameter of a circle if the radius is known?

Back

Diameter = 2 × Radius

Front

If the radius of a circle is 10ft, what is the diameter?

Back

20ft

Front

What is the value of pi (π) approximately?

Back

3.14

Front

What is the relationship between the circumference (C) and diameter (D) of a circle?

Back

C = π × D

Front

What is the formula to find the circumference of a circle using the radius?

Back

Circumference = 2 × π × Radius

Front

If the diameter of a circle is 16, what is the radius?

Back

8

Front

What does the term 'circumference' refer to in a circle?

Back

The measurement around the circle.

Front

What is the diameter of a circle?

Back

The distance from an edge of a circle to another edge through the center.

Front

If a circle has a circumference of 31.4ft, what is its diameter?

Back

10ft (using C = π × D)

Front

What is the radius of a circle with a diameter of 4?

Back

2