What is the formula for arc length?
Arc Length and Area Sector

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•
Mathematics
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Arc Length = (θ/360) * 2πr, where θ is the angle in degrees and r is the radius.
2.
FLASHCARD QUESTION
Front
How do you calculate the area of a sector?
Back
Area of Sector = (θ/360) * πr², where θ is the angle in degrees and r is the radius.
3.
FLASHCARD QUESTION
Front
What is the relationship between the radius and the circumference of a circle?
Back
Circumference = 2πr, where r is the radius.
4.
FLASHCARD QUESTION
Front
If the radius of a circle is 7 cm, what is the circumference?
Back
Circumference = 2π(7) = 14π cm.
5.
FLASHCARD QUESTION
Front
What is the formula for finding the length of an arc in a circle?
Back
Arc Length = (θ/360) * Circumference.
6.
FLASHCARD QUESTION
Front
How do you find the angle in degrees if you know the arc length and radius?
Back
θ = (Arc Length / Circumference) * 360.
7.
FLASHCARD QUESTION
Front
What is the circumference of a circle with a diameter of 10 cm?
Back
Circumference = πd = π(10) = 10π cm.
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