Question

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. 5.12. Find: (i) the total length of the silver wire required. (ii) the area of each sector of the brooch.​

Answer 1

Step-by-step explanation:

Diameter =35mm

∴ Circumference of circle

=2×π×r =2×π×17.5=110mm

i) The total length of the silver wire required

= Circumference of circle + (5×35)

=110+175 = 285mm

(ii) The area of each sector of the brooch

=

10/Area of circle

=

10/π×17.5×17.5

=

4/385mm

please mark it as brainliest answer