Question 1081383
The uniform width path is AROUND the swimming pool.


Entire area of the path and the pool:   {{{(30+2x)(20+2x)}}}.


The area of only the surrounding path:  {{{(30+2x)(20+2x)-30*20}}}.
Simplify this.
{{{30*20+100x+4x^2-30*20}}}
{{{highlight_green(4x^2+100x)}}}




(b)
{{{4x^2+100x=360}}}
Solve this.
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