Problema Solution
The area of a rectangular wall of a barn is 21 square feet. Its length is 4 feet longer than it width. Find the length and width of the wall of the barn
Answer provided by our tutors
let 'w' represent the width, then 'w+4' represents the length
area = l*w, where 'l' and 'w' represent length and width, respectively
21 = w(w+4)
solving for 'w' we have a positive value of w=3
3+4=7
the wall is 3 feet wide and 7 feed long