The answer is in the pictures.
Answer:
6156
Step-by-step explanation:
formula is TSA=2LW+2LH+2HW
In mathematics, a square is the result of multiplying a number by itself. The verb "to square" is used to denote this operation. Squaring is the same as raising to the power 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 32, which is the number 9.
To solve this problem you must apply the proccedure shown below:
1. You have the following expression given in the problem above:

2. You need to sum the fractions located on the left member, as following:


3. Simplify it and you will obtain a quadratic equation. Solve it by factor out
:

Therefore, the answer is: 