the diameter of a sphere is 6 cm. ie is melted and drawn into a wire of diameter 2mm. the length of the wire is ?

• Ans= 36 m.
  Volume of sphere=(4/3)*Pi*r^3=(4/3)*pi*3^3=36*pi cm^3
  The volume of Sphere=Volume of wire(Cylinder)
  =Pi*r^2*h=Pi*0.1^2*h= 0.01*Pi*h (where h=Length of the wire)
  =>0.01*Pi*h=36*pi or h=36/0.01=3600 cm or 36 m.
• 10 years agoHelpfull: Yes(1) No(1)