Final answer:
The surface area of the tissue box with the given dimensions is 270 square inches.
Step-by-step explanation:
To find the surface area of a tissue box, we need to calculate the areas of all six sides and then add them together. The formula for the surface area of a rectangular prism is:
Surface Area = 2(length x width) + 2(length x height) + 2(width x height)
Using the given dimensions, we can substitute them into the formula, so the surface area of the tissue box would be:
Surface Area = 2(9 x 7) + 2(9 x 4.5) + 2(7 x 4.5)
Surface Area = 126 + 81 + 63
Surface Area = 270 square inches