Circles

What is the radius of this circle?

• 12
• 6
• 24

What is the area of this circle?

What is the radius of this circle?

• 20
• 10
• 40

What is the area of the circle if the diameter is 20 inches?

What is the area of this circle?

What is the area of this circle?

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

The radius is....

• a line that crosses through the center and touches each edge 
• the center point of a circle 
• a line from the center point to the edge of the circle
• an element in science

A line that goes from one end of the circle to the other and crosses the center point.  

• center
• diameter
• dime eater
• radius

Find the area of the circle.