Which is it?
Dats Crazy!
Figure it!
Use the formulas!
100
Circumference or Area? The distance around a Ferris wheel.
Circumference
100
Calculate the perimeter of this shape in terms of pi if the side of each square is 7 units.
28 + 14pi units
100
A circle has radius 40 cm. What is an estimate of it's area?
5,026 cm2
100
What is the area of circle A?
The area is 0.785 u2
200
The amount of paint needed to paint a red and white bullseye.
Area
200
Calculate the perimeter of this shape.
64.96 units
200
A painter needs to paint the bottom of a circular pool. The pool has a diameter of 30 feet. What is the area of the pool?
706.5 ft2
200
What is the circumference of this circle?
C = 6.28 units
300
The amount of whipped cream needed to go around the edge of a pie.
Circumference
300
What is the perimeter of this shape in terms of pi?
42 + 14pi
300
What is the perimeter of this figure?
18.71u
300
What is the perimeter of this shape?
41.42 units
400
The amount of material needed to make a drum head (the part of the drum you hit).
Area
400
Write the perimeter of this shape in terms of pi if the side length of the squares is 9.
36 + 18pi
400
What is the area of this figure, to the nearest square unit?
23.07u2
400
Circle C has an area of pi.
False
500
Does there appear to be a proportional relationship between circumference and area? Explain or show your reasoning.
No. Dividing the area by the circumference gives a different answer every time
500
What is the area of the shape?
300.86 u2
500
Calculate the perimeter of this shape.
10.28 inches
500
Pi is the constant of proportionality relating the radius of a circle to its circumference.
False, it's the diameter