A rectangular plot is to be fenced on all four sides with exactly 80 m of wire
MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation
Problem
A rectangular plot is to be fenced on all four sides with exactly 80 m of wire. For which length should each side be taken so that the enclosed area is maximised?
(a) 30m
(b) 20m
(c) 40m
(d) 10m