Question 275113
You need to be clear on definition of perimeter
Perimeter is the length of all the outside
edges of a closed figure added together
So, the perimeter of the rectangle is:
{{{p = x + x + y + y}}}
given:
{{{p = 2x + 2y}}}
{{{p >= 80}}} cm
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{{{2x + 2y >= 80}}}
{{{x + y >= 40}}} cm