Area of Two Circles Based on Radius

What is the area of this circle?

• 163.29

• 15.31

• 124.23

• 113.04

Find the area of the circle below.

• 100.4 cm

• 225.9 cm

• 9 cm

• 28.26 cm

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

• 50.24 m²

A clock face has a diameter of 10 inches. What is the approximate area of the clock face in square inches?

• 314 in²

• 31.4 in²

• 7.85 in²

• 78.5 in²

If the problem ask you to find the length from the center of the circle to the edge of the circle , which formula should you use?

• r = 1/2d

• d = 2r

• C = πd

• A = πr²

If the word problem is asking you to find the space inside the circle, which formula should you use?

• r = 1/2d
• d = 2r
• C = πd
• A = πr²

A sprinkler that sprays water in a circular area can be adjusted to spray up to 30 feet. To the nearest tenth, what is the maximum area of lawn that can be watered by the sprinkler?

• 188.4 ft²

• 7026.5 ft²

• 183.6 ft²

• 2,826 ft²

The Girl Scout patch shown has a radius of 1.25 inches.  Approximately, what is the area of the patch?

• 5 sq. in
• 6 sq. in
• 7 sq. in.
• 8 sq. in.

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

• 63.585 ft²

• 68.345 ft²

• 64.585 ft²

• 61.345 ft²

What is the area of a circle with a radius of 21 cm?

• 1384.74 cm²

• 2142.12 cm²

• 4348.08 cm²

• 1289.12 cm²