Circles Circles Circles

What is the radius of this circle?

• 12cm

• 6cm

• 24cm

• 3cm

find the area of the circle with radius 3 cm below.

• 100 cm²

• 225 cm²

• 9 cm²

• 28.26 cm²

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Which of the following names a radius?

• segment AC

• segment DB

• segment AB

• segement BC

What is the diameter?

• 8

• 16

• 10

• 4

What number does π represent?

• 4.13

• 3.41

• pie

• 3.14

What is the symbol for pi?

• #

• π

• &

• %

A figure where all points are the same distance to a point called the center.

• Square

• Triangle

• Circle

• Rectangle

A line segment that goes from the center to the edge of a circle.

• Diameter

• Radius

• Circumference

A line segment that goes from one edge of a circle to the other and passes through the center.

• Radius

• Diameter

• Circumference

• Area