A contractor is applying 4 in. by 4 in. by 6 mm tiles to the interior of a pool in the shape of a rectangular prism. The contractor wants to estimate how many tiles it will take to cover all of the interior walls and floor of the pool. Which statement is true? The contractor should use estimates of square inches since the number of tiles will depend on the volume of the pool more than the surface area. The contractor should use estimates of square inches since the number of tiles will depend on the volume of the pool more than the surface area. The contractor should use estimates of square inches since the number of tiles will depend on the surface area of the pool more than the volume. The contractor should use estimates of square inches since the number of tiles will depend on the surface area of the pool more than the volume. The contractor should use estimates of cubic inches since the number of tiles will depend on the volume of the pool more than the surface area. The contractor should use estimates of cubic inches since the number of tiles will depend on the volume of the pool more than the surface area. The contractor cannot estimate the number of tiles used since the measurements include both inches and millimeters.