SF PreAlgebra 10.3 Area of Circles

What does area mean?

• the distance around a shape
• half the distance around a shape
• the amount of space outside a shape
• the amount of space inside a shape

Tags

CCSS.6.G.A.1

What is the formula for area of a circle?

• $A=\pi d$

• $A=2\pi r$

• $A=\pi r^2$

• $A=\pi d^2$

Which are the following units are acceptable for area? Check all that apply.

• $m^2$

• $ft^3$

• $in$

• $cm^2$

What is the radius of this circle?

• 12
• 6
• 24

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 20
• 10
• 40

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the area of this circle?

• 82.13 m²
• 78.50 m²
• 314.16 m²
• 170.12 m²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 62.59 cm²
• 113.1 cm²
• 19.81 cm²
• 28.26 cm²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 8322.13 cm²
• 1133.54 cm²
• 4536.46 cm²
• 1267.09 cm²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 50.27
• 78.23
• 98.12
• 201.06

Tags

CCSS.7.G.B.4