Area and Circumference of Circles

If my diameter is 18 inches, what is my radius?

• 18 inches

• 9 inches

• 36 inches

• 56.54 inches

Tags

CCSS.7.G.B.4

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

Determine the radius of the penny.

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

Tags

CCSS.7.G.B.4

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

What is the formula for finding the circumference of a circle?

• C = πr²

• C = rd

• A = 2·π·r

• C = π·d

Tags

CCSS.7.G.B.4

Select the correct formula for finding area of a circle

• A = l x w

Tags

CCSS.7.G.B.4

What is the circumference of a 12-inch diameter pizza?

• 37.68 inches
• 18.84 inches
• 113.04 inches
• 432.16 inches

Tags

CCSS.7.G.B.4

Find the circumference of the the circular pool.

• 14ft

• 7ft

• 43.96ft

• 21.98ft

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 12ft

• 24ft

• 37.68ft

• 75.36ft

Tags

CCSS.7.G.B.4

What does C represent in the formula:

C = π·d

• Pi

• Circumference

• Diameter

• Area

Tags

CCSS.7.G.B.4