The total surface area of the 3-dimensional hexagonal prism can be calculated by adding the areas of the top hexagon, the bottom hexagon, and the six rectangular sides.
The formula for the area of a regular hexagon is (3√3 × s^2)/2, where s is the length of a side.
For the top hexagon, we have s = 90 cm.
Area of the top hexagon = (3√3 × 90^2)/2 = 23,382 cm^2
For the bottom hexagon, we have s = 45 cm.
Area of the bottom hexagon = (3√3 × 45^2)/2 = 5,845.5 cm^2
For each of the six rectangular sides, we have a width of 45 cm and a height of 38.97 cm.
Area of each rectangular side = 45 × 38.97 = 1,753.65 cm^2
Total area of all six rectangular sides = 1,753.65 × 6 = 10,521.90 cm^2
Therefore, the total surface area of the hexagonal prism is:
23,382 + 5,845.5 + 10,521.90 = 39,749.40 cm^2
Since the sides of the coffee table are made of glass, the total area of glass needed for one coffee table is 10,521.90 cm^2.
So, the answer is 10,521.90 cm^2.