One cubic meter piece of copper is melted and recast into a bar 36 meters long with a square cross-sectional area. An exact cube is cut off from this bar. The cost of this cube, if 1 m3 of copper costs Rs.216 will be :

Explanation

`1m^3=l*b*h`

`1m^3=l^2*h`

`1/36=l^2=Area of square bar

Side=1/6m.

length of cube=1/6m

36m bar=216Rs.

1/6 m bar price=1/6*216/36=1 Rs.