Radius & Diameter
Circumference and Area
Parts of circles
Circles in the real world
Potpourri
100
The diameter is 10 inches. Find the radius.
What is 5 inches?
100
A circle has a diameter of 12.5 inches. What is the circumference in terms of
pi
?
What is 12.5pi inches?
100
A circle has an area of 12 ft squared. It is cut into 4 equal pieces. What is the area of each piece?
What is 3 ft2?
100
A bicycle wheel has a radius of 1 foot. If the bicycle wheel rotates one time, what distance is traveled in terms of "pi" and in terms of feet?
What is 2pi or 6.28 feet?
100
The room where Mrs. Brown-Gomez teaches.
What is room 904?
200
The radius is 25 feet. Find the diameter.
What is 50 feet?
200
A circle has a diameter of 25 inches. What is the circumference?
What is 78.5 inches?
200
A circle has a circumference of 21.98 feet. What is the diameter of the circle?
What is 7 ft.?
200
A large Jeep has a tire with a radius of 18 inches. Find the circumference of the wheel in terms of "pi" and in terms of inches.
What is 36 pi or 113.04 inches?
200
What is the Capital of California?
What is Sacremento?
300
The circumference of the circle is 56.52 or
18pi
.
Find the radius.
What is 9 inches?
300
A circle has a radius of 50 miles. What is the area of the circle?
What is 7850 mi2.
300
The diameter of a pizza is 16 inches long. The pizza is cut into 8 pieces. What is the length of crust on each piece?
What is 6.28 in?
300
A wheel has a radius of 50 cm.
Find the area in terms of "pi" and in centimeters squared.
What is 2,500 pi or 7,850 cm squared.
300
What is the tallest mountain in California?
Mount Elbert
Mount Whitney
Mount McKinley
Mount Everest
What is Mount McKinley?
400
The circumference of a circle is
25pi
inches.
Find the radius.
What is 12.5 inches?
400
A circle has a diameter of 16. Find the area in terms of pi.
What is 64pi?
400
The diameter of a pizza is 16 inches long. It is cut into 4 pieces. Jane eats 3 of the pieces. What is the area of pizza she is eating "in terms of pi"?
What is 48 pi in2
400
John owns a circular pool in his back yard. If the diameter of the pool is 12 feet, what is the circumference of the pool in terms of "pi" and in feet? 
pi meters. What is the radius of this circle?
What is 12 pi or 37.68 meters?
400
What classroom number do you go to for math?
What is 801?
500
A circle has a circumference of
256pi cm.
Find the diameter.
What is 256 centimeters?
500
A circle has a circumference of
6pi
.
What is the area in square units?
What is 28.26 square units?
500
What is the area of the circle that surrounds the two smaller circles, in terms of pi?
What is 25 pi units squared?
500
A pizza with a diameter of 22 inches cost $28. How much does one square inch of pizza cost?
What is about $0.07 per square inch.
500
How many teeth does an adult human have?
What is 32?