1.

Three gold cubes each of 3cm length are melted and gold cuboid is formed from it.The area of the base of the cuboid is `27cm^2`. What is the height of the cuboid?

Answer» `a=3cm`
volume of cube`a^3=3^3=27cm^3 `
volume of 3 cubes `=3xx 27cm^3`
`LxxB=27cm^3`
`volume of cuboid =(LxxBxxH)`
cuboid=cube``
`3xx27=27xxH`
`H=3cm`


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