Question

A hundred cubical cardboard boxes are required in a jewellery shop. The length of the edge of each box must measure $15cm$. How many cardboard sheets of size $30cm\times 30cm$ will be required to make these boxes?

Answer 1

No. of cardboard sheets = $\frac{100\times 6a^2}{lb}$

$=\frac{100\times 6\times 15\times 15}{30\times 30}$

$=150$ sheets