Question 1173319
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Club members want a banquette of uniform width around the pool.
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No.  That is not what you mean.  Maybe a border or walkway or something, but not "banquette".


p, the uniform strip width around the pool
(30+2p)(40+2p), area of pool PLUS the surrounding whatever
(30)(40), area of just the pool upper surface


{{{highlight_green((30+2p)(40+2p)-30*40=296)}}}--------simplify and solve


Possible first two steps:
{{{30*40+80p+60p+4p^2-30*40=296}}}
{{{140p-4p^2=296}}}
and YOU continue and finish!

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