You are in a room with a square box of side length a and a l

You are in a room with a square box of side length a and a lattes of length L. The square box is against the wall and you place the latter against the box. How for up the wall can you reach? Express your answer in l and a

Solution

We can reach upto a distance from the wall = length of box + length of box

                                                                = l + a