Circles Review

What is the formula for circumference of a circle?

• C = d⋅π
• C = 2⋅π⋅r
• C = π⋅r²
• C = d⋅π and
  C = 2⋅π⋅r

Tags

CCSS.7.G.B.4

What is the formula for area of a circle?

• A = π⋅r²
  
• A = d⋅π
• A = 2⋅π⋅r
• A = 2⋅r

Tags

CCSS.7.G.B.4

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

A bike wheel has a diameter of 10 ft. What is the circumference of the wheel?

• 10π feet 
• 3.14π feet
• 3.14 feet

Tags

CCSS.7.G.B.4

A circle's diameter is 13 cm.  What is the approximate circumference?  

• 6.5 cm
• 13 cm
• 40.8 cm 
• 20.4 cm 

Tags

CCSS.7.G.B.4

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Tags

CCSS.7.G.B.4

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Tags

CCSS.HSG.CO.A.1

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.C.A.2

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

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

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

• diameter
• radius
• π
• center

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.C.A.2