
Understanding Circle Sector Area
Interactive Video
•
Mathematics, Science
•
7th - 10th Grade
•
Hard

Lucas Foster
FREE Resource
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7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the area of a sector in a circle?
Area = πr²
Area = 1/2 r² θ
Area = r² θ
Area = 2πr
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why must the central angle be in radians when using the sector area formula?
Because radians are easier to measure
Because degrees are not accurate
Because the formula is derived using radians
Because radians are a larger unit
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert degrees to radians?
Add 180
Subtract 90
Multiply by 180/π
Multiply by π/180
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example problem, what is the radius of the circle?
4 inches
5 inches
3 inches
6 inches
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the central angle given in the example problem?
π/2 radians
π/3 radians
π/6 radians
π/4 radians
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplified area of the sector in the example problem?
2π/3 inches
16π/3 inches
4π/3 inches
8π/3 inches
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which step involves reducing the fraction in the example problem?
Multiplying by the central angle
Converting degrees to radians
Calculating the radius squared
Simplifying 1/2 times 16 times π/6
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