The answer is the initial cost is 4500
We can set up a proportion.
32/128 = x/100
32 * 100 = 3200
128 * x = 128x.
Now we have 128x = 3200.
All we need to do is divide 3200 by 128, so 3200 / 128 = 25, so your answer is 25%.
It's a hexagon.
The formula of the sum of internal angles in the polygon:

Therefore

For water 1 gram = 1 ml.
This means 45 grams are equal to 45 ml's.
Neither one is greater than the other one as they are equal.
The problem doesn't state what is being measured, so the answer could be different depending on the density of the product being measured.