Question: An open box with a rectangular base is to be made from a piece of tin measuring 3 0 cm by 4 0 cm by

An open box with a rectangular base is to be made from a piece of tin measuring 30 cm by 40 cm by cutting out a square from each corner and turning up the sides. Find the dimensions that yield the maximum volume.
( I need all steps included and I need you to write with "words" how to slove it, plus the math work. Also make sure the answer is idenifiablle) thank you and please read my requermments

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