Radius

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• area

• circumference

The distance halfway across the circle is called the...

• radius

• diameter

• circumference

• area

If the radius of a circle is 8 cm, the diameter is 16 cm.

• TRUE

• FALSE

If my radius is 10ft, what is my diameter?

• 20ft

• 5ft

• 31.4ft

• 62.8ft

Point to all radii shown in the circle.

What is the radius of this circle?

• 15 in

• 30 in

• 7.5 in

• 225 in

The distance from a point on the surface of a circle that passes through the center to the other side of the circle is (a)  

• diameter

• radius

• volume

• cone

• cylinder

• sphere

A circle has a diameter of 36 ft. What is the radius?

• 18

• 72

• 14

If the diameter of a circle is 10 cm, the radius is 5 cm.

• TRUE

• FALSE

What is the diameter of a circle if the radius is 8 cm?

• 8 cm

• 16 cm

• 4 cm