What is the best solution of areas related to circles of ncert class 10 please give me the solution of exercise 12.2 question number 9 and also give me the easiest solution of this question.A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 12.12. Find: (i) the total length of the silver wire required. (ii) the area of each sector of the brooch.