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OrA brooch is made with silver wire in the form of a circle Awith diameter 35 mm. The wire is also used in making5 diameters which divide the circle into 10 equal sectorsas shown in the given figure. Find (i) the total length ofthe silver wire required (ii) The area of each sector of thebrooch. (use Ď-22/7). |
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Answer» Given,Diameter = d = 35mmRadius of the circle =r= d/2=35/2Circumference of brooch = 2πr = 2*22/7*35/2 = 110mmLength of wire required = 110 + 5 x 35 = 110 + 175 = 285mm |
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