Lesson
Arc Length and Sector Area
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huntington_m
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• Slide 1
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Arc Length and Sector Area

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• Slide 2
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• Slide 3
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• Slide 4
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ARC LENGTH

• Question 5
900 seconds
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Q.

In a​ circle, a 90° sector has area 64π in2. What is the radius of the​ circle?

16 in

32 in

64 in

128 in

• Question 6
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Q.

If the length of the 45° region of this circle is  $10\Pi$   inches, what is the radius of the circle?

40 in.

$4\sqrt{5}$  in.

10 in.

20 in.

• Question 7
900 seconds
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Q.

What is the area of the shaded region? Round to the nearest hundredth. (Hint: Area of a triangle is 1/2*b*h)

78.53

314.16

28.54

58.54

• Question 8
900 seconds
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Q.

Calculate the length of the bold arc.

49.7 ft

15.8 ft

24.9 ft

3.14 ft

• Question 9
900 seconds
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Q.

Calculate the area of the sector.

4248 m2

7.9 m2

2827.4 m2

11.8 m2

• Question 10
900 seconds
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Q.

Calculate the area of the sector.

9.2 sq. in.

10.5 sq. in.

31.4 sq. in.

38.2 sq. in.

• Question 11
900 seconds
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Q.

Calculate the length of the bold arc.