Circles

Circles

Multiple Choice

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

• diameter
• radius
• π
• center

Multiple Choice

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

• diameter
• radius
• π
• center

Multiple Choice

find the diameter of the circle

• 1 ft

• 4 ft

• 4 mm

• 2 ft

Multiple Choice

find the radius of the circle

• 3 m

• 1.5 m

• 1.5

• 1.5 mm

Multiple Choice

find the diameter of the circle

• 14 m

• 7 m

• 14

• 3.5 m

Multiple Choice

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

Multiple Choice

pi =

• 6.14

• 1,000,000,000,000

• 3.14

• 0.1

Multiple Choice

the circumference is ____

• around circle

• inside circle

• goes through the circle

Multiple Choice

diameter is 1/2 of the radius

• true

• false

Multiple Choice

Which segment is the diameter?

• AC
• BD
• LM
• CE

Multiple Choice

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2
• Divide the diameter by 2
• Add 2 to the diameter
• Subtract 2 from the diameter

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

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

The Carillo family has a circular swimming pool with a diameter of 10 feet. Find the area of the pool cover to the nearest tenth.

• 94 ft²

• 53.4 ft²

• 70.9 ft²

• 78.5 ft²

Multiple Choice

Shring's dining room table is round and has a radius of 4.5 feet. What is the tabletop's area?

• 63.585 ft²

• 68.345 ft²

• 64.585 ft²

• 61.345 ft²

Multiple Choice

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the area of her welcome mat in square feet?

• A = 30.15

• A = 25.12

• A = 56.12

• A = 16.5

Multiple Choice

A circular table top has a radius of 3 feet. A decorative trim is placed along the outside edge of the table. How long is the trim?

• 6.28 feet

• 12.56 feet

• 18.84 feet

• 25.12 feet

Multiple Choice

The diagram below shows the radius of the circular opening of a bowl. What is the approximate circumference of the opening in centimeters?

• 29.83

• 9.5

• 59.66

Multiple Choice

Find the area of the circle.

• 43.96
• 153.86
• 87.82
• 307.72

Multiple Choice

What is the circumference?

• 36

• 115.45

• 108

• 113.04

Multiple Choice

What is the circumference?

• 36
• 18π
• 108π
• 36π

Multiple Choice

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Multiple Choice

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 
• 9.42 m
• 12 m
• 18.84 m