Answer: There is net change of -58 feet from the floor of the underground level to the ceiling of the fourth level above ground.
Step-by-step explanation:
Since we have given that
Number of levels above ground = 8
Number of levels of building below ground = 1
Height of each level from floor to ceiling = [tex]14\dfrac{1}{2}\ feet=\dfrac{29}{2}\ feet[/tex]
So, we need to find the net change in elevation going from the floor of the underground level to the ceiling of the fourth level above ground.
Let us assume that the floor at ground level is at an elevation of zero feet.
So, Height of fourth level above ground is given by
[tex]\dfrac{29}{2}\times 4\\\\=29\times 2\\\\=58\ feet[/tex]
so, Net change in elevation going from the floor of the underground level to the ceiling of the fourth level above ground is given by
0-58 feet = -58 feet.
Hence, there is net change of -58 feet from the floor of the underground level to the ceiling of the fourth level above ground.
