Applying the Understanding of the Circumference of a Circle to Solve Problems

If the radius of a circle is 5 cm, what is its circumference? (Use π = 3.14)

• 25 cm

• 10 cm

• 31.4 cm

• 15.7 cm

A circular swimming pool is 21 feet in diameter. 

What is the circumference of the pool?

Use 3.14.

• 10.5 ft

• 42 ft

• 65.94 ft

• 131.95 ft

Find the Circumference of the circle that has a diameter of 54 cm

What is the circumference if the Diameter is 10 ft?

• 25.1 ft

• 18.34 ft

• 30.78 ft

• 31.4 ft

If a wheel rotates one time, the distance it travels is equal to:

• The diameter of the wheel

• The circumference of the wheel

• The radius of the wheel

• The area of the wheel

To mathematically calculate the special number "pi" you need the __________________________.  

• circumference  &  the diameter 

• diameter  &  the radius 

• any two parts of the circle 

Steven purchases a bowl. The circumference of the  bowl is 43.96 cm. What is the radius of the bowl?

• 28 cm

• 14 cm

• 138.03 cm

• 7 cm

Find the circumference.

The radius of a circle is 12 cm. What is the approximate circumference of the circle?

• 75 cm

• 38 cm

• 24 cm

Find the circumference of a circle with
radius = 100 cm

• 628.3 cm

• 31.42 cm

• 314.2 cm

• 310 cm