Asked by Brittania
A fence to a rectangular enclosure has a width w, which Is (5m) shorter than its length.
(A).write down an expression for the perimeter of the enclosure.
(B).if the perimeter is not to exceed (150m), find the maximum possible width of the enclosure.
(A).write down an expression for the perimeter of the enclosure.
(B).if the perimeter is not to exceed (150m), find the maximum possible width of the enclosure.
Answers
Answered by
Reiny
width ---- w
length ---- w+5
P = 2w + 2(w+5)
= 2w + 2w + 10
= 4w + 10
4w + 10 ≤ 150
4w ≤ 140
w ≤ 35
max width is 35 m
length ---- w+5
P = 2w + 2(w+5)
= 2w + 2w + 10
= 4w + 10
4w + 10 ≤ 150
4w ≤ 140
w ≤ 35
max width is 35 m