Help with maths!
posted by Andrea on .
A rectangular field is surrounded by a fence on three of its sides, and a straight hedge on the fourth side. If the length of the fence is 320m, find the maximum area of the field enclosed.
So...how should i do it? Does it matter which of the 'three sides' they are talking about?? I don't seem to get the question... Please help!
Let x be length and y be width,
then Area = xy
Area = 320y

The maximum area would be a square, so let x be the length of one side.
3x = 320 and
x^2 = area
Area ≠ 320y
I hope this helps. Thanks for asking.