What is the least number of square pieces into which a cardboard, 13ft long and 8ft wide can be cut?

Question

solution pls...

Answer 1

If you have to cover the whole board, then you will get
8x8 5x5 3x3 2x2 1x1 1x1

It works out nicely because the dimensions are Fibonacci numbers:
1,1,2,3,5,8,13,...