9. 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. Find :
(i) the total length of the silver wire required.
The total wire required will be for 5 diameters and the circumference of the brooch.
The circumference of the brooch:-
Hence the total wire required will be:- .