Topic 11 Quiz- Circles

What is the formula for circumference of a circle given the diameter?

• C = π r

• C = 4π r

• C = π d

• C = 2 π d

The distance across a circle through its center is called the _____.

• diameter

• radius

• π

• center

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

• diameter

• radius

• π

• center

A _____ is half of a circle.

• circumference

• pi

• semicircle

•  composite figure

Which segment is the diameter?

• AC

• BD

• LM

• CE

The definition of a circle is

• set of all points in a plain that are the same distance from a point called the center

• the distance around a share

• a large figure

• a pizza, orange, plum, or watermelon

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

A line segment connecting any two points on a circle is called a _____________. 

• diameter

• chord

• radius

• circumference 

What is the circumference of a 12-inch pizza?

• 37.68 inches

• 18.84 inches

• 113.04 inches

• 432.16 inches

The Jones family wants to enclose their circular garden with a fence. What is the minimum length of fencing they need to buy?

• 56.25 ft

• 246.2 ft

• 365.56 ft

• 392.5 ft