The tinsmith

I told the tinsmith named Espartero
to do for a cube for my uncle Jero.
I said, "twelve inches in the background I want,
and containing twenty -five gallons inside.
If from the top the diameter is twice the low bottom,
Tell me what the wide diameter is, to buy a lid on my jero uncle.

There is a very beautiful method to solve this type of exercises and shows that 2 square boxes, one of 17,229 inches and another of 25,409, will give 22 cubes of 9,954 square inches. So the proportions of black tea and green tea will be what 17.229 be 25.469.