Radius
Diameter
Circumference
Area
100
Define what a radius is.
100
Define what a diameter is.
100
Find the circumference if the radius is 6 km. (Hint: the equation for circumference = d(3.14)
About 38 km.
100
Find the area of a circle with a radius of 12 mm. (Hint: the equation for area = (3.14)r^2
About 452 square mm.
200
What is the radius if the diameter is 586 mm
293 mm
200
Find the diameter if the radius is 72 yds.
144 yds
200
Find the circumference if the diameter is 44 cm.
About 138 cm.
200
Find the area of a circle with a diameter of 50 ft.
About 1963 square ft.
300
What is the radius if the circumference is 18.8 in?
About 3 in
300
Find the diameter if the circumference is 270 ft.
About 86 ft
300
Find the circumference if the area is 78.5 square inches.
About 31.4 in.
300
Find the area if the circumference is 50.24 mm.
About 201 square millimeters.
400
What is the radius if the area is 1256 m2?
About 20 m
400
Find the diameter if the area is 113.04 square feet.
About 12 ft
400
How many tire rotations does a tire need to do in order to travel approximately 1,004.8 ft. The radius of the tire is 20 feet. (Hint: Try somewhere between 1-10 tire rotations)
8 Tire Rotations!
2r(3.14)=Circumference
125.6=Circumference
125.6(8)=1,004.8 ft
400
Find the area of this shape. 
About 38 square inches.