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Solution


Q.

A brooch is crafted from silver wire in the shape of a circle with a diameter of 35 mm. The wire is also used to create 5 diameters, dividing the circle into 10 equal sectors, as shown in the figure.

Based on the above information, answer the following questions:

 

(iii) (a) What is the total length of silver wire required
1 250 mm  
2 282 mm  
3 285 mm  
4 200 mm  

Ans.

(3)

Total length of the required wire

=2πr+5d=110+5×35=110+175=285 mm