Area and Circumference of Circles

What is the formula for area of a circle?

• A = pi x D
• A = 2pi x r
• A = pi x r2
• A = pi x D2

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 12
• 6
• 24

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 1385.44
• 2142.12
• 5541.77
• 1289.12

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 20
• 10
• 40

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 1256.64
• 31.41
• 314.16
• 123.12

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 6082.12
• 1520.53
• 1893.14
• 1292.92

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 140
• 35
• 70

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 15393.8
• 1248.12
• 5930.12
• 3848.45

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 62.59
• 113.1
• 19.81
• 28.27

Tags

CCSS.7.G.B.4