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?
What is 2pi or 6.28 feet?
100
Where did Mrs. Packard go to college?
What is Central Michigan.
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
**DAILY DOUBLE**
A circle has a circumference of 21.98 feet. What is the area of half of the circle?
What is 19.2325 ft. squared?
200
A large Jeep has a tire with a radius of 18 inches. Find the circumference of the wheel.
What is 36pi or 113.04 inches?
200
What is the Capital of Michigan?
What is Lansing?
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
A pizza is 16 inches long (the diameter). The pizza is cut into 8 pieces. What is the length of crust (circumference) on each piece?
What is 6.28 in?
300
A wheel has a radius of 50 cm.
Find the area.
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
A pizza is 16 inches long (diameter). It is cut into 4 pieces. Jane eats 3 of the pieces. What is the area of pizza she is eating?
What is 48 pi in2
400
***DAILY DOUBLE***
John owns a circular pool in his back yard. If he swims around the pool, he swims 30pi meters. What is the radius of this circle?
What is 15 meters?
400
What classroom number do you go to for math with Mrs. Packard?
What is 119?
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?
What is 28.26 square units?
500
What is the area of the shaded region in terms of pi?
What is 12pi?
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?