Radius
Diameter
Circumference
Area
SUPER DIFFICULT
100
Draw a circle with a radius.
100
Draw a circle with a diameter.
100
Find the circumference if the radius is 6 km.
About 38 km.
100
Find the area of a circle with a radius of 12 mm.
About 452 square mm.
100
Radius and Circumference are proportional. True or False?
True. Constant is 2 pi.
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.
200
What is the perimeter of this shape?
About 92.8 cm
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 of this shape. 
About 19 in.
300
Find the area of this shape.
About 38 square inches.
300
Radius and area are proportional. True or false?
False.
400
What is the radius if the circumference is 542 mi?
About 86 mi
400
Find the diameter if the circumference is 201 m.
About 64 m.
400
Find the circumference of this shape with a diameter of 5 ft.
About 8 ft.
400
Find the area of this shape with a diameter of 11 yds.
About 47 square yards.
400
How many rotations does the tire need to do in order to travel 13,200 ft?
About 200 rotations.
500
What is the radius if the circumference is 1256 m2?
About 200 m
500
Find the circumference if the area is 113.04 square feet.
About 36 ft
500
Find the circumference if the area is 78.5 square inches.
About 31.4 in.
500
Find the area if the circumference is 50.24 mm.
About 201 square millimeters.
500
DAILY DOUBLE!!
Write the answer on a piece of paper with your point wager.
A goat is tied to a 6 foot rope. It travels around all day eating up all the grass. Now the farmer needs to plan new grass seed. Each bag of grass seed covers about 4ft2. Each bag of grass seed costs $23. How much is the farmer going to have to pay in order to spread grass seed on the now muddy circle?
$667 because the area needed to cover is about 113ft2. The farmer would need 29 bags in order to cover all of the area and would have seed left over. 29 bags costs $667.