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Home > INT2 > Chapter 8 > Lesson 8.4.2 > Problem 8-93

8-93.

For each circle below, what are the arc length and the area of the shaded sector? Write your answers in terms of .

  1.  

    Circle, center labeled, O, with segments, from center to 2 points on the circle, labeled, A, &, B, with segment, O,B, labeled, 5 cm, & the sector enclosed between the 2 segments, shaded gray.

    arc length = (fraction of circle)(circumference of circle)

    sector area = (fraction of circle)(area of circle)

  1. in 

    Circle, center labeled, P, with segments, from center to 2 points on the circle, directly across from each other, labeled, C, &, D, segment C,D, is a diameter, area above the diameter is shaded.

    Use the same two methods as part (a). What is the radius of this circle?

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