Intro to Circles

In order to find the circumference of a circle you need which of the following (choose all that apply)

• height

• diameter

• slope

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• circumference

• area

If a circle has a diameter of 10 ft. then which statement is true?

• The radius is 5 ft. 

•  The diameter is 5 ft

• The radius is 20 ft.

• The diameter is 20 ft.

• 31.4 cm

• 62.8 cm

• 15.7 cm

• 28.26 cm

What is the formula to calculate the area of a circle?

Which segment is a radius?

• LM

• DC

• BD

• ML

The perimeter of a circle is usually called the...

• radius

• diameter

• circumference

• area

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius