Question 997342
L*W=170
2L+2W=170
L+W=85
L=(85-W)
(85-W)*W is a maximum
-W^2+85W=0
The vertex x value is -b/2a
=85/2 with minus signs gone
42.5 or (85/2) units for both L and W
It is a square.
{{{graph(300,200,-100,100,-100,2200,-x^2+85x)}}}