counter is made silver wire in the form of circle with diameter 35mm the wire is also used in making 5 diameter which devided the circle into 10
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diameter d = 2×35 =70
length of wire used = 2πr + 5 d
= 2× 22/7 × 35 + 5× 70
= 2×22×5 + 350
= 220+350
=570 mm
area of each sector =
= 1/ 10 ×22/7 × 35×35
=11×35
=385 sqmm
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