A brooch is made with silver wire in the form of a circle with a diameter of \(42\ mm\). The wire is also used in making \(5\) diameters which divide the circle into \(10\) equal sectors as shown in Fig. [use \(\pi = \frac{22}{7}\)]
Obtain: (i) The total length of the silver wire required.
Ans: \(mm\)
(ii) The area of each sector of the brooch.
Ans: \(mm^2\)
(Note: If the answer is a whole number enter as it is, if it is decimal, round upto \(2\) decimal places)