Find the Radius and Diameter

Find the radius of a circle if its diameter is 12.8 feet. (Type the answer including the units)

Find the radius of a circle if its diameter is 15.9 centimeters. (Type the answer including the units)

Name the part of the circle pointed by the arrow.

• Radius

• Diameter

• Circumference

• Arc

Find the diameter of a circle if its radius is 7.5 meters. (Type the answer including the units)

What is the diameter?

• 8

• 16

• 10

• 4

What is the radius?

• 18

• 72

• 38

• 14

• center
• diameter
• radius

• center
• diameter
• radius

Diameter ....

• A. BD

• B. IR

• C. DR

• D. DI

Find the diameter in this picture!

• ED

• OC

• DC

• BA