Chapter 7 Circles, Arcs and Sectors are the second most difficult chapter in the book. Go through the detailed solutions to help. This chapter covers circumference, arc length, sector area, and semi-circles. The questions in this chapter start off as easy but get much more difficult towards the end.
Pertinent Formulas
C=2pi(r)
C=pi(d)
Arc length = (central angle/360 deg) (2pir)
Area of a Sector = (central angle/360 deg) (pi(r)^2)
Area of a Triangle 1/2(b)(h)
Area of a Rectangle lxw
Section Difficulty Level 9.5