Circles

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

Tags

CCSS.7.G.B.4

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

What is the circumference?

• 50.24

• 25.12

• 24.5

• 18.3

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

What is the circumference?

• 36

• 115.45

• 108

• 113.04

Tags

CCSS.7.G.B.4

The distance all the way around the circle is called the...

• radius

• diameter

• circumference

• area

Tags

CCSS.7.G.B.4

The space contained inside of a circle is called the...

• radius

• diameter

• circumference

• area

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

Find the area of the circle. Leave in terms of π.

• 18π in²

• 9π in²

• 81π in²

Tags

CCSS.7.G.B.4

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

Tags

CCSS.7.G.B.4

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

Tags

CCSS.7.G.B.4