Word Problems
A circle has a radius of 3, find the circumference. (Express your answer in terms of π)
C=6π
When is Pi Day?
March 14
What is the circumference formula?
C=2πr
C=πd
I am a number that never ends,
yet I’m celebrated with dessert and friends.
I’m irrational but loved in class,
without me circles wouldn’t pass.
π
I’m round, delicious, and sometimes my name is a pun in math class. Who am I?
Pi
A circle has a diameter of 10, find the area. (Express in terms of pi)
A=25π
What is the value of pi? (Express as a fraction)
π=22/7
What is the formula for area of a circle?
A=πr2
What kind of pie do math teachers like the most?
Pi
What do you get if you divide the circumference of a pumpkin by its diameter?
Pumpkin Pi
A right triangle has sides 3, 4, and 5.
A circle is drawn with radius 5.
What is the area of the circle? (Express in terms of pi)
A=25π
What kind of number is pi?
Irrational
What is the formula for volume of a cylinder?
A=πr2h
I have no corners yet endless sides.
You can spin me forever and still stay inside.
π helps measure me every day.
What am I?
A circle
What kind of pie do astronauts like?
Moon Pie
Which of the following correctly represents the first 7 digits of π?
A) 3.141592
B) 3.141598
C) 3.141595
D) 3.141599
A) 3.141592
Who was born on Pi Day?
Albert Einstein
What is the formula for surface area of a sphere?
S=4πr2
I can be measured in degrees or radians, but I’m not a temperature. What am I?
A circle
I’m a dessert that can also be a spy. What am I?
A pi-rate pie
The graph of x2+x+y2+y=199/2 in the xy-plane is a circle. What is the length of the circle’s radius?
r=10
What is the first 10 digits of pi?
3.1415926535...
What is the formula for surface area of a right cylinder?
S=2πrh+2πr2
Why should you never argue with π?
Because it goes on forever.
I’m the dessert everyone calls a classic, with a golden crust and a filling that’s both sweet and tart. What am I?
Apple Pie