Area Review

What is the area formula for a circle?

• A = πr²

• A = 2πr

• A = √π

Tags

CCSS.7.G.B.4

Find the area of the circle below.

• 8.76 cm²

• 18.52 cm²

• 21.90 cm²

• 28.26 cm²

Tags

CCSS.7.G.B.4

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer to the nearest tenth of a square inch.

• 25.2 in²

• 28.5 in²

• 31.4 in²

• 38.2 in²

Tags

CCSS.HSG.C.B.5

Find the area of the circle. When a number is written next to the center of the circle, it represents the diameter length. The diameter is 18 in.

• 56.52 in²

• 254.34 in²

• 1017.36 in²

• 113.04 in²

Tags

CCSS.7.G.B.4

What is the radius of a circle with an area of 49π?

• 49

• 10

• 7

• 14

Tags

CCSS.7.G.B.4

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

• Radius
• Diameter

What is a good explanation of the relationship between the radius and diameter?

• The diameter is half of the radius

• The radius is half of the diamter

• The circumference is 3.14 times the diameter

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

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

What is the area of this figure?

• 40 square units
• 40 units
• 40

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3