So to find the area of floor space we need to know the sides..
So we dont know the side and so to find the side of the cube we need to- (see the above pic)
So by doing this we get 12 as the side...
Now we need to know the area of floor space(as the shape is square) so area is s²= 12×12=144
So therefore area is 144cm² (of floor space)