Question
GSE Geometry Unit 4: Circles and Arcs Review GuideFor Problems 1–11, use the marked circle diagrams to find the requested value. The diagrams cover central angles, inscribed angles, tangent-chord angles, cyclic quadrilaterals, and angles formed inside or outside a circle.For Problems 12–18:12. Find the area of a quarter sector of radius 6.13. Find the length of a quarter-circle arc of radius 6.14. A radius-8 pizza is cut into 8 equal pieces. Find one piece's area.15. Find the outer-crust length of one piece from Problem 14.16. A circle has circumference 26π cm. Find its area.17. A sprinkler covers a 240° sector with radius 15 yd. Find the covered area.18. The radius from a clock's center to its numbers is 9 in. At 4:00, find the minor arc length between the hands and the area of the minor sector.
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The problem order, diagrams, and teacher answers were checked against the teacher-hosted review guide and key. Exact pi values are calculated from the stated measurements. Most decimal differences in the key reflect use of pi approximately equal to 3.14; the key's Problem 14 value of 25.15 is a minor decimal discrepancy.