D101 Activity: Circles + Volume

The diameter of a circle is:

• The measurement around the circle.
• The distance from an edge of a circle to another edge.
• The distance from the center of the circle to an edge of a circle
• The distance from an edge of a circle to another edge through the center. 

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

What is the radius of this circle?

• 12cm
• 6cm
• 24cm
• 3cm

• 50.24 inches

• 25.12 inches

• 12.56 inches

• 200.96 inches

• 31.4 units

• 62.8 units

• 314 units

• 20 units

• 14.13 meters

• 28.26 meters

• 56.52 meters

• 18 meters

Find the area of the circle. Use 3.14 for π.

• 803.84 cm²

• 25.12 cm²

• 50.24 cm²

• 200.96 cm²