Question

a cylindrical copper rod of diameter 1 cm and length 8 cm is drawn into a wire of length 18 M of uniform thickness find the thickness of wire​

Answer 1

Answer:

thickness is 30cm

Step-by-step explanation:

volume of copper rod = volume of wire

πr²h = πR²H  {where r = 1 cm, h = 8 cm, H = 1800cm}

1 x 1 x 8 = r x r x 1800

r x r = 225

r = 15 cm

thickness = 2r = 30 cm