Review of Circumference & Area of Circles

The radius of a circle is ​ (a)   the diameter.

• half
• twice
• triple

The ratio between a circle's circumference and ​ (a)   is ​ (b)  

• diameter
• radius

Tags

CCSS.7.G.B.4

What is the EXACT AREA of this circle? Leave you answer in terms of pi.

Mathematical Equivalence

ON

12 inches in this circle represents its

• radius

• diameter

Tags

CCSS.7.G.B.4

What is the length of the diameter of the circle?

Tags

CCSS.7.G.B.4

Find the circumference of the circle whose radius is 4 in

• 12.56 in

• 25.12 in

• 50.24 in

Tags

CCSS.7.G.B.4

Find the circumference of the circle whose diameter is 10 m

• 31.4 m

• 62.8 m

• 15.7 m

Tags

CCSS.7.G.B.4

A line that goes from one end of the circle to the other and crosses the center point.  

• center
• diameter
• dime eater
• radius

What is the formula for Circumference?

• C = π×r²
• C = 2×π×r

Tags

CCSS.7.G.B.4

What is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4