Question

A lady builds 9cm length, 10cm width, 3cm height box using 3cubic cm cubes. what is the minimum number of cubes required to build the box?

Answer 1

*Assuming you can't cut the cube up into 2 or more smaller rectangle prisms

Find the number of cubes length-wise:

10 ÷ 3 = 3.3 → she needs 4 cubes

Find the number of cubes breadth-wise:

9 ÷ 3 = 3 → she needs 3 cubes

Find the number of cubes height-wise:

3 ÷ 3 = 1 → she needs 1 cube

Total number of cubes needed:

4 x 3 x 1 = 12 cubes

Answer: She needs 12 cubes.