Area and Circumference

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

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

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

What is the formula for Circumference?

• C = π×r²
• C = 2×π×r

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 18 in
• 10 in
• 9 in
• 8 in

Tags

CCSS.7.G.B.4

What is the diameter of this circle?

• 3.5 m
• 3 m
• 5 m
• 7 m

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

Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the distance around the cookie?

• 10 in
• 2.5 in
• 15.7 in
• 31.4 in 

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 18
• 36
• 9
• 8

Tags

CCSS.7.G.B.4

A ball has a circumference of 9.42 cm. What is the diameter?

• 29.5788 cm
• 59.1576 cm
• 3 cm
• 1.5 cm

Tags

CCSS.7.G.B.4

_diameter?

• 5 in
• 10 in
• 3.14 in
• 2.5

Tags

CCSS.7.G.B.4