Example 1: Find an equation of the circle with centre at (0, 0) and radius r. Example 1: Find an equation of the circle with centre at (0 0) and radius r. October 30, 2021 Category: Chapter 11 - Conic Sections , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related Example 2: Find the equation of the circle with centre (–3, 2) and radius 4.Find the equation of the circle with 4. centre (1,1) and radius sqrt 2Find the equation of the circle with 1. centre (0,2) and radius 2