I need help please asap

Answer:
The hollow interior of the base is 12.8 inches high and 5.8 inches wide.
This is because the interior measurements are the difference of the exterior measurements and the measurements of the side.
Step-by-Step:
The sides of the vase are 0.20 inches thick and the entire vase is 13 inches high and 6 inches wide. To find the vase's measurements without the added thickness of the sides (the interior), all we need to do is subtract the two measurements:
Height:
13 - 0.20 = 12.8 inches
Width:
6 - 0.20 = 5.8 inches
Hope this helps! :)