Question:
In the following exercise, a formula is given along with the values of all but one of the variables in the formula. Find the value of the variable that is not given
S=2LW+2WH+2LH;
S=108,
L=3
W = 4
Solution:
Consider the following equation:

now, if we replace the given data, in the previous equation, we obtain:

this is equivalent to:

this is equivalent to:

this is equivalent to:

thus, solving for H, we get:

Then, we can conclude that the value of the variable that is not given is:
