Pi and Circle Vocabulary

What is the area of a circle with a radius of 3?
Use A=πr²

• 9π

• 5π

• 91π

• 34π

A circular window has a diameter of 24 inches.  What is the area of the glass in the window ? (Best Choice)

• 24π or about 75.36 in²

• 12π or about 37.68 in²

• 576π or about 1,808.64 in²

• 144π or about 452.16 in² 

Find the arc length of the bolded arc. Give your answer in terms of π.

• (65/12)π cm

• 17.02 cm

• (845/24)π cm

• 26π cm

Name a chord.

• Segment XC

• Segment LM

• Segment HJ

• LINE BD

Name a tangent.

• Segment XC

• Segment LM

• Segment HJ

• LINE BD

What is the name for the distance around a circle?

• Diameter

• Radius

• Circumference

• Chord

Which best describes line AB?

• chord

• secant

• tangent

• diameter

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

• 20ft

• 5ft

• 31.4ft

• 62.8ft

How do you find the area of a circle?

Find x. Assume that segments that appear to be tangent are tangent.

• 11.2

• 18.0

• 25.0

• 30.0