Circumference and Area of a Circle

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

• 5 ft

• 20 ft

Tags

CCSS.7.G.B.4

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.

• The measurement around the circle

Does this picture show the diameter or radius of a circle?

• Radius

• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

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

• Add 2 to the diameter

• Divide the diameter by 2

Tags

CCSS.7.G.B.4

What is the distance around a circle?

• Circumference

• Area

The circumference of a circle is

• The measurement from an edge of a circle to another edge.

• The measurement around the circle

What is the circumference of this circle ?

• 3.14 cm

• 37.68 cm

Tags

CCSS.7.G.B.4

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

• 28.26 m²

• 29.55 m²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2

• 113.1

Tags

CCSS.7.G.B.4