Vocabulary
Formulas
One step problems
Two step problems
100
What is the sector?
A sector is basically the portion of a disk.
100
What are the 2 formulas for circumference?
c = 2(pi)r or c= (pi)d
100
Solve for the radius if the circumference is 26.
4.14 Approx.
100
What is the area of a circle if the diameter is 104cm? (Use 3.14)
8490.56cm^2
200
What is a circumference?
It's the perimeter of the circle.
200
What is the formula for radius if you know the area of the circle?
r = the square root of A/pi
200
Solve for the circumference if the radius is 5
31.42 Approx.
200
What is the sector area if the radius is 5m and the central angle is 36m? (Use 3.14)
7.85m
300
What is a radius?
It is a line segment that connects any point to the center of a circle.
300
What s the area of a circle?
A = (pi) r^2
300
Find the circumference of a circle if the diameter is 540
1696.46 Approx.
300
What is the area of a circle if the circumference is 365mm?
Approximately 10601.71mm^2
400
What is the diameter?
It is a chord that goes through the center point of the circle.
400
What is the proportion if you are dealing with the arc length, circumference etc.?
Central Angle / 360 = Arc Length / Circumference
400
What is the area of a circle if the diameter is 24
452.39 Approx.
400
What is the central angle of a circle if the area of the sector is 145cm and the radius is 10cm?
Approximately 166.16cm
500
What do we need to determine the sector area?
To determine Sector Area, we need central angle and total area and 360.
500
What is the proportion if you are dealing with the sector area, the disk area etc.?
Central Angle / 360 = Sector Area / Disk Area
500
What is the radius of a circle if the area is 658?
The radius is 14.47 approx.
500
What is the sector area if the central angle is half the area of the circle, and the radius is 4m?
Approximately 3.51m
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