I need help with answering this problem, thank you!

2. Jose wants to buy a medicine from the nearest drugstore but due to a lockdown, Jose cannot enter a certain vicinity unless he is resident of the barangay where the nearest drugstore is located. The drugstore is located at (1,2) which is at the boundary of the Baranggay. Following the straight and the longest path, Aling Nena's store, which is at the end of the vicinity is located at (3, 6). Barangay's boundary is circular in shape. a. what will be the equation of the circle in standard form? b. what will be the equation in general form? c. Is Jose allowed to buy medicine on the Drugstore if his house is at (1, -4)