Area and Circumference of Circles

what is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm

Which segment is the diameter?

• AC

• BD

• LM

• CE

What is the formula for area of a circle given the radius?

• A = πr

• A = 2πr

• A = πd

• A = πr²

If the area of a circle is 78.5 in² , then the radius is?

• 10 in

• 5 in

• 25 in

• pi in

If the circumference of a circle is 69.08 , what is the diameter?

• 22 ft

• 11 ft

• π ft

• 0 ft

The _____ is the distance from the center to any point on the circle.

• diameter

• radius

• π

• center

The distance across a circle through its center is called the _____.

• diameter

• radius

• π

• center

A _____ is half of a circle.

• circumference

• pi

• semicircle

•  composite figure

Which segment is a radius?

• LM

• DC

• BD

• ML

What is circumference?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.