Circle Word Problems

The radius of the top of an eraser on a pencil is 2.5 millimeters . Find the circumference of the eraser to the nearest tenth.

• 49.3 mm

• 22.6 mm

• 15.7 mm

• 7.9 mm

Steven purchases a bowl. The diameter of the

bowl is 14 cm. What is the circumference of the

bowl? Round to the nearest hundredth. Don't forget to label.

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2

• Subtract 2 from the diameter

• Add 2 to the diameter

• Divide the diameter by 2

A _____ is half of a circle.

• circumference

• pi

• semicircle

• composite figure

Find the circumference of a circle with a radius of 12.5 mm. Round to nearest hundredth. Don't forget to label.

Daniel wants to buy cookies for his friend. The

radius of a cookie is 5 inches. What is the cookie’s

circumference? Round to the nearest hundredth. Don't forget to label.

Marisa purchases a pot for her father's garden. The diameter of the bottom of the pot is 18 cm. What is the area of the pot's bottom? Round to the nearest hundredth. Please label like this - square cm or sq cm)

What is the area of a circle with the diameter of 10 cm ? Round to the nearest hundredth. Don't forget to label square cm or sq cm.

A glass stained window is shaped like a semicircle. The bottom edge of the window is 36 inches long. How much colored glass would you need to cover the stained window? Round to the nearest hundredth. (please label - sq inches or sq in)