Question

a 18m long thin wire is drawn by melting a copper rod of diameter 1m and length 8m . calculate the thickness of the wire​

Answer 1

Answer:Note the volume of the material in both the shapes will be the same only.

Volume of rod1=volume of rod2

π(r1)2h1=π(r2)2h2

substituting values we get,

12×12×8=1800×r22

=>(r2)=130cm thickness of wire=230cm

Step-by-step explanation:

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