Given:
Length of the truck = 80 cm
Width of the truck = 60 cm
To find:
The longest walking stick that can be placed in the bottom of a truck.
Solution:
The longest walking stick that can be placed in the bottom of a truck is the diagonal of the truck.
We know that, the diagonal of a rectangle is:

Where, l is the length and w is the width.
Putting
and
, we get




Therefore, the length of the longest walking stick that can be placed in the bottom of a truck is 100 cm.