Math, asked by richa311, 1 year ago

solve question no 13 please

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Answered by vvijay385
0
Solution:
Since बेलन is cylindrical in shape;

Diameter of helical coil = 4 + 20 +4 = 28 cm
Circumference of coil .
= π × 28
= 87.96 cm

since the thickness of wire is 4mm, therefore pitch of the wire coiled around the Belan will also be 4mm.

No. of revolutions = (240/4) + 1
= 61 Nos

Therefore, length of the wire = circumference × no. of revolutions
= 87.96 × 61
= 5365.56 cm

Hope you got it!

richa311: sir answer match nahi kr raha
vvijay385: Tell me the answer, I'll try to figure it out.
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