Circles Diameter

To find the circumference of a circle, you must multiply the ________________ by 3.14.

• circumference

• area

• radius

• diameter

The distance across a circle through the center is called what?

• Area

• Diameter

• Circumference

• Radius

If the radius of a circle is 4 inches, what is the diameter?

• 2 inches

• 2 feet

• 4 inches

• 8 inches

What is the diameter of this circle?

• 6 m

• 6 cm

• 24 cm

• 24 m

What is the diameter?

• 8

• 16

• 10

• 4

The distance all the way across the circle, but through the center, is called the...

• radius

• diameter

• circumference

• area

The distance around a circle (circumference) is about ____ times the distance across the circle (diameter).

• 2 times

• 3 times

• 4 times

• 5 times

What is the radius?

• 18

• 72

• 38

• 14

What number is pi?

• 41

• 00

• 3.14

• 5.14

What is the "formal" definition of pi?

• 22/7

• 3.1415926

• the ratio of a circle's circumference to its diameter

• the surface area of a sphere of diameter 22/7