Circumference Practice

12 inches in this circle represents its

• radius

• diameter

14cm in the circle represents its

• radius

• diameter

What is the length of the diameter of the circle?

What is the length of the radius of the circle?

Find the circumference of the circle

• 50.24 yd

• 25.12 yd

• 11.14 yd

Find the circumference of the circle

• 18.84 cm

• 75.36 cm

• 37.68 cm

Find the circumference of the circle whose radius is 4 in

• 12.56 in

• 25.12 in

• 50.24 in

Find the circumference of the circle whose diameter is 10 m

• 31.4 m

• 62.8 m

• 15.7 m

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

Pi is an ​ (a)   number.

• irrational
• rational
• natural
• whole