Circumference Using Pi as 3.14

Serena drew a circle with a circumference of 157 centimeters.  What is the approximate diameter of the circle she drew?

• 57 cm

• 15.7 cm

• 50 cm

• 25 cm

• The square root of the area of a circle.

• The ratio of the radius of a circle to its diameter.

• The radius of a circle times 3.14. 

• The ratio of the circumference of a circle to its diameter.

_______________ is the distance around a circle.

• circumference

• radius

• center

• diameter

If you divide the circumference of a circle by its diameter, what answer will you always get?

• The radius

• The area

• Pi

• cake

Find the circumference to the nearest foot?

• 231 feet squared

• 132 feet squared

• 321 feet squaed

• 123 feet squared

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

What do you get when you divide the circumference of a Jack-o-Lantern by its diameter?

• Pumpkin

• Jack-o-Lantern

• Pumpkin Pi

• Pi in the Sky

Pi is the ratio of a circle’s _________ to _________. 

• radius/diameter

• circumference/diameter

• area/circumference

• circumference/radius

To find Pi you must do what?

• circumference times radius

• circumference divided by radius

• radius times diameter

• circumference divided by diameter