Answer:
n + n+2 + m+4 = 87
I got this answer.....hope it may helpful
The anser is that what i think
Too hard for me. I'm only in 5th grade
<span>For all rectangles with a fixed perimeter of p the rectangle with the maximum area is one where the length is p/4 and the width is p/4, in other words a square. The area of such a rectangle would be (p*p) /16.</span>
