Unit 9 PreReview

A straight line from the center of a circle to the circumference is called the ____.

• Diameter

• Circumference

• Radius

• Area

A straight line segment that passes through the center of a circle and whose endpoints lie on the circumference of the circle is called the ____.

• Diameter

• Radius

• Circumference

• Area

What is the radius of a circle when the diameter is 70 m?

• 38 m

• 35 m

• 90 m

• 140 m

If a radius of a circle is 24 m, what is the diameter?

• 12 m

• 32 m

• 25 m

• 48 m

What is the diameter?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

What is the radius?

• 8 mm

• 4 mm

• 16 mm

What is the diameter?

• 40 ft

• 80 ft

• 20 ft

What is the Diameter?

• 8 m

• 16 m

• 4 m

What is the radius?

• 94 cm

• 188 cm

• 47 cm

What is the radius?

• 70 cm

• 35 cm

• 140 cm