one cubic metre piece of copper is melted and recast into a square cross-section bar, 36m long. an exact cube is cut off from this bar.if cubic metre of copper cost Rs 108, then the cost of cube is?

1) 50 paise
2) 75 p
3) 1 Re
4) 1.5 Re

• Area of square cross section of bar = 1/36 sq mtrs
  side of square cross section of bar = 1/6 mtrs
  vol of cube of this side size = 1/216 cubic mtrs
  if cubic metre of copper cost Rs 108, then the cost of cube is 108*1/216 = Rs 1/2 or 50 paisa.... option 1
• 11 years agoHelpfull: Yes(1) No(1)