Many standardized tests like the ACT, SAT, GRE, and GMAT ask questions related to the central angle, arc length, and sector area of circles. Rather than memorizing formulas for these, this guide will show you how to use the simple concepts of proportions and “part over whole” to solve.

Click here to access the pdf guide on Part over Whole Circle problems with an answer key

Check out our YouTube tutorial on these type of Circle Problems.