Circumference
Area of a Circle
Volume of a Cylinder
Riddles
100
What is the formula for circumference of a circle?
C=pid
or
C=2pir
100
What is the area formula for a circle?
A=pir^2
100
What is the formula for volume of a cylinder?
V=Bh
or
V=pir^2h
100
I am an odd number. Take away a letter and I become even. What number am I?
Seven (Even)
200
Find the circumference of a circle with a diameter of 12cm
12pi or 37.69
200
Find the area of a circle with a radius of 5 feet. Answer in terms of pi.
25pi ft^2
200
Find the volume of a cylinder where the area of the base is 23.12 square inches and the height is 8 inches.
184.96 cubic inches
200
If two’s company, and three’s a crowd, what's four + five?
9
300
Find the circumference of the circle below. Round to 1dp.
194.8 cm
300
Find the area of the circle below. Round to the nearest tenth.
1661.9 cm^2
300
Find the volume of the cylinder. Answer in terms of pi.
396pi m^3
300
Which is heavier: a ton of bricks or a ton of feathers?
They weigh the same
400
Find the circumference of the circle below. Round to the nearest inch.
12 inches
400
Jim Bob wants to stain his pool deck, which is in the shape of a semicircle. What is the area of his pool deck? Round to the nearest hundredth.
226.19 ft^2
400
Find the volume of the cylinder. Round to the nearest hundredth.
706.86 cm^3
400
A man describes his daughters, saying, “They are all blonde, but two; all brunette but two; and all redheaded but two.” How many daughters does he have?
3
1 blonde, 1 brunette and one redhead
500
The circumference of a circle is 36.15 centimeters. What is the radius of the circle? Round to the nearest centimeter.
6 centimeters
500
Joe buys a pizza and shares it with his friends.
-The pizza is cut into 8 slices.
-Joe and his 4 friends each have a slice.
If they ordered a 10-inch diameter pizza, how many square inches were eaten? Round to the nearest square inch.
49 square inches.
500
A jumbo glue stick is in the shape of a cylinder.
-The height of the glue stick is 8 centimeters.
-The radius of the glue stick is 3 centimeters.
-1 cubic centimeter of the glue stick weighs 1.2 grams.
How much does the glue stick weigh? Round to the nearest hundredth.
271.43 grams
500
What has 13 hearts, but no other organs?
A deck of cards