Question

A brooch is made with silver wire in the form of a circle with diameter 35mm . The wire is also used in making 5 diameters which divide the circle into 10equal sectors. Find the total length of silver wire required

Answer 1

ans 285
$2\pi \: r$
$\pi \: d$
(22÷7)35

22×5

110 ..(i)


5d

5×35

175 ..(ii)

110+175

285