Riya is building a staircase of cubes. She uses 1 cube on the top step, then groups of consecutive odd numbers of cubes for each later level so that each level forms a perfect cube. The first level uses 1 cube $(1^3)$, the second uses 3 + 5 = 8 cubes $(2^3)$, the third uses 7 + 9 + 11 = 27 cubes $(3^3)$. How many cubes does the fourth level use?

All Patterns in Cubes practice questions

More Class 8 Patterns in Cubes practice