Circles Review

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

Tags

CCSS.7.G.B.4

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

• 10 in
• 5 in
• 25 in
• pi in

Tags

CCSS.7.G.B.4

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

• 22 ft
• 11ft
• π ft
• no ft

Tags

CCSS.7.G.B.4

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2
• Divide the diameter by 2
• Add 2 to the diameter
• Subtract 2 from the diameter

Tags

CCSS.7.G.B.4

Which segment is the diameter?

• AC
• BD
• LM
• CE

Which segment is a radius?

• LM
• DC
• BD
• ML

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

Tags

CCSS.7.G.B.4

The symbol for Pi is

• π
• Σ
• Ψ
• ⊈

Tags

CCSS.HSG.GMD.A.1

Find the area of the circle, giving your answer to 1 decimal place.

• 154.0cm²

• 38.5cm²

• 38.4cm²

• 153.9cm²

Tags

CCSS.7.G.B.4

Find the area of the circle, giving your answer to 1 decimal place.

• 78.5cm²

• 19.6cm²

• 19.6m²

• 78.5m²

Tags

CCSS.7.G.B.4