All about Circles

Multiple Select

what is the definition of pi

select ALL that apply

• it is the sixteenth letter in the greek alphabet

• it has a represented value of 3.14

• it has a represented value of 22/7.

• Its something you eat...

Multiple Choice

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

• diameter
• radius
• π
• center

Multiple Choice

Which segment is the diameter?

• AC
• BD
• LM
• CE

Multiple Choice

Which segment is a radius?

• LM
• DC
• BD
• ML

Multiple Choice

The definition of diameter is

• distance from the center of any point on the circle

• distance across the circle through the center

• distance from one point to another

• distance around the circle

Multiple Choice

The definition of radius is

• distance from one point to another point

• distance around the circle

• distance from the center to any point on the circle

• distance across the circle through the center

Multiple Choice

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

• diameter
• radius
• π
• center

Multiple Choice

find the radius of the circle

• 3 m

• 1.5 m

• 1.5

• 1.5 mm

Multiple Choice

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

Multiple Choice

find the diameter of the circle

• 1 ft

• 4 ft

• 4 mm

• 2 ft

Multiple Choice

find the diameter of the circle

• 14 m

• 7 m

• 14

• 3.5 m

Multiple Choice

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

• C = π r
• C = 2 π r
• C = π d
• C = 2 π d

Multiple Choice

The definition of circumference is

• distance from the center of any point on the circle

• distance from one point to another

• distance around the circle

• distance from the center of any point on the circle

Multiple Choice

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

Multiple Choice

Find the Circumference of a circle with a radius of 5

• $$C=25\pi$$

• $$C=5\pi$$

• $$C=10\pi$$

• $$C=\pi$$

Match

Match the following.

• r=2

• d=6

• r=6

• d=2

A=

A=

A=

• $$A=4\pi$$

• A= $$9\pi$$

• A= $$36\pi$$

• A= $$\pi$$

Labeling

Label the anatomy of a circle

Drag labels to their correct position on the image

center

circumference

area

radius

diameter