Question

The mass of 20 metres of copper wire is 0.9 find the mass of 170 metres of the
the same type of copper wire

Answer 1

20 m of wire = 0.9 unit weight

10 m of wire=0.45 unit weight

170 m of wire = 0.45×17=7.65 unit weight

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Answer 2

Answer:

7.65 kg is answer

Step-by-step explanation:

mass of 20m of copper wire= 0.9kg

mass of 1m of copper wire= 0.9÷20

= 09/20×10

= 9×170/200

= 9×17/20

= 153/20

Answer is =7.65 kg

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