Year 8 - Area of a Circle (calculator)

Find the area of a circle with a diameter of 20 cm.

(pi=3)

• 300 cm²

• 60 cm²

• 300 cm

• 1200 cm²

Find the area of a circle with a diameter of 14 cm.

(pi=3)

• 157 cm²

• 147 cm²

• 137 cm

• 117 cm²

Find the area of this shape:

• $144\pi\ cm^2$

• $288\pi\ cm^2$

• $576\pi\ cm^2$

• $72\pi\ cm^2$

Find the area of this shape:

• $144\pi\ cm^2$

• $32\pi\ cm^2$

• $64\pi\ cm^2$

• $16\pi\ cm^2$

The diameter of Carol's old records from the 80s is 12 inches. Which equation would help you determine the area?

• A = 12π
• A = 2π12
• A = π(12²)
• A = π(6²)

Tags

CCSS.7.G.B.4

Find the area of the circle below.

• 113.04 cm²

• 18.84 cm²

• 9 cm²

• 28.26 cm²

a line from the center point to the edge of the circle

• diameter
• radio
• radius
• pi

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 50.27 m²

Tags

CCSS.7.G.B.4

What is the area of a circle with a diameter of 10 cm ?

• 31.4 cm²
• 78.5 cm²
• 15.7 cm²
• 314 cm²

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a diameter of 10 cm?

• 31.4 cm
• 78.5 cm
• 62.8 cm
• 314 cm

Tags

CCSS.7.G.B.4