Question 938041
#2:


x and y, the dimensions of the rectangular area.
{{{2x+y=40}}} for the fence length.
{{{xy=192}}}, and x is the length perpendicular to the wall.
Two equations in two unknowns resulting in quadratic equation; simple problem and solution.



#1:


Factor for both dimensions, x.
{{{(3x)(2x)=864}}}
{{{6x^2=864}}}
{{{x^2=144}}}
{{{x=12}}}, allowing you to evaluate the dimensions.