Unit 11 Test

What is the formula for circumference of a circle given the diameter?

• C = π r
• C = 2 π r
• C = π d
• C = 2 π d

If the area of a circle is 25 π in² , then the diameter is?

• 10 in
• 5 in
• 25 in
• pi in

If the circumference of a circle is 22 π ft, what is the radius?

• 22 ft
• 11ft
• π ft
• no ft

If the circumference of a circle is 22π , what is the diameter?

• 22 ft
• 11 ft
• π ft
• 0 ft

Find the arc length of arc AB.

• 12.57 units
• 75.40 units
• 24 units
• 125.66 units

What is the area of the shaded sector?

• 339.12 in²
• 113.04 in²
• 339.29 in²
• None of the above

Find the circumference of the circle

• 87.82
• 153.86
• 43.96
• 307.72

What is the area of this circle?

• 8322.13
• 1134.11
• 4536.46
• 1267.09

An arc is a smaller piece of the...

• Chord
• Center
• Circumference
• Radius

Name the pictured part of the circle.

• Diameter

• Sector

• Radius

• Chord

• Arc