Could someone please help me with this circle geometry questions? I just confused just not exactly sure how to do any of these kinds of questions. Any help is apperciated.Thanks in advance
Since AOB is an equilateral triangle, angle AOB = π/3 rad.
Perimeter of the shaded portion is AB + 1/6(2πR) , where R is the radius circle i.e. OA
Area of the shaded portion is 1/6(πR^2) - area of OAB.