Area of a Circle Review

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

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

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the formula for finding the area of a circle?

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d

Tags

CCSS.7.G.B.4

What does A represent in the formula:

A = π·r²

• Area

• Radius

• Pi

• Diameter

Tags

CCSS.7.G.B.4

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

Tags

CCSS.7.G.B.4

What number does π represent?

• 4.13

• 3.41

• pie

• 3.14

Tags

CCSS.HSG.GMD.A.1

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

A circle has a radius of 13. What is the area? Use 3.14 for pi.

Round your answer to 2 decimal places.

(a)  

Tags

CCSS.7.G.B.4

Shring's dining room table is round and has a radius of 4.5 feet. What is the tabletop's area?

• 63.59 ft²

• 68.34 ft²

• 64.585 ft

• 61.34 ft²

Tags

CCSS.7.G.B.4

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²
• 29.55 m²
• 30.36 m²
• 28.26 m²

Tags

CCSS.7.G.B.4