43 A level Mathematics Edexcel 2018 Paper 1 Q3

In this video, we tackle a geometry problem involving a sector of a circle. We are given the area of the sector and a relationship between its perimeter and arc length. The goal is to find the exact value of the radius R. We'll use formulas for arc length and sector area, and algebraic manipulation to solve for R. Watch to see how we derive the radius from the given information. Visit AxiomTutoring.com and subscribe to @AxiomTutoringCourses for more math tutorials.