Question

"A copper wire 3mm in diameter ,is wound about a cylinder whose length is 12cm , and diameter 10cm so as to cover the csa of the cylinder . Find the length of copper wire is used in curved surface area of cylinder???

Answer 1

Answer:

788g

Step-by-step explanation:

For copper wire: Diameter = 3 mm = 0.3 cm For cylinder; length h = 12 cm, d = 10 cm Density of copper = 8.88 gm cm3 Curved surface area of cylinder can be calculated as follows: Length of wire can be calculated as follows: Now, volume of wire can be calculated as follows: Mass can be calculated as follows: Mass = Density × Volume = 8.88 × 88.7364 = 788 g (approx)