Question

1 cm cube of copper is drawn into 0.2 mm diameter.find the length of the wire.
plz ans fast bcz tommorow is exam and the person who will ans correctly l will thanks them and rate their ans as 5


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Answer 1

Answer:

Volume of copper =1cm

3

Length of wire = x

Radius =0.1 mm

Volume of wire = volume of copper

⇒πr

2

h=1cm

3

⇒π(

10

0.1

)(

10

0.1

)h=1

⇒h=

0.7×0.1×π

10×10×100

=3183cm

⇒h=31.83m.

Answer 2

Answer:

h = 31.83 m

Step-by-step explanation:

Given:

1 cm³ cube of copper.

Diameter of the copper wire = 0.2 mm.

Volume of copper wire = 1 cm³

Hence, Volume of wire = Volume of copper.

We know volume of cylinder = πr²h

∴ πr²h = 1 cm³

π ( 0.1 / 10 ) ( 0.1 / 10 ) h = 1

h = 10 × 10 × 100 / 0.7 × 0.1 × 3.14

h = 10000 / 0.2198

h = 3183.63 cm

h = 31.83 m