Circumference
Circle Areas
Trigonometry
Right Circular Cylinder Areas
Pi Day Grab Bag
100
The diameter of a circle which has a circumference of pi.
What is one?
100
The area of a circle which has a radius of 4 inches.
What is approximately 50.24 square inches?
100
180 degrees in radian measure.
What is pi radians?
100
A three-dimensional figure, with two circular bases perpendicular to the height of the figure.
What is a right circular cylinder?
100
The first six digits of pi.
What is 3.14159?
200
The circumference of a circle which has a diameter of 10.5 m.
What is pi x 10.5 m or approximately 33 m?
200
The area of a half-circle which has a diameter of 12.66 mm.
What is approximately 63 square mm?
200
Pi/2 radians in degree measure
What is 90 degrees?
200
The area of one of the bases of a right circular cylinder.
What is A = pi*r^2? (What is "pi-r-squared"?)
200
C = pi x diameter
What is the formula for calculating the circumference of a circle?
300
The diameter of a circle which has a circumference of 125.6 miles.
What is approximately 40 miles?
300
The area of a circle which has a radius of 5.615 cm.
What is approximately 99 square cm?
300
540 degrees in radian measure
What is 3 pi radians?
300
The area of the side of a right circular cylinder.
What is 2*pi*r, the circumference of one of the bases, times the height?
300
The world language which gives us the symbol for pi.
What is Greek?
400
The ratio of a circle's circumference to its diameter (i.e. C/d).
What is pi?
400
The area of the unit circle.
What is pi square units?
400
Sin (pi/6) where pi/6 is in radians
What is 0.5?
400
The area of the top circle plus the area of the bottom circle plus the area of the side of the cylinder.
What is the area of a right circular cylinder? Or, what is A = 2(pi*r^2) + 2*pi*r*h?
400
The number of digits in pi.
What is infinite?
500
"Two-pie-are"
What is the circumference of a circle?
500
(pi x diameter squared)/4
What is the area of a circle with diameter d?
500
The sin and the cos of this first quadrant angle is the same.
What is pi/4 radians (or 45 degrees)?
500
The surface area of a right circular cylinder with base radius of one cm and height of one cm.
What is A = 2(pi*1^2) + 2*pi*1*1 = 2(pi^2 + pi), or, approximately 26 square cm?
500
The number pi is one of these, a number which cannot be expressed exactly as a fraction and whose decimal representation never ends or never repeats.
What is an irrational number?
M
e
n
u