Problema Solution
A rectangular solar panel has a length that us 12in shorter than 4 times its width. If the perimeter of the panel is 216 inches, what are the dimensions of the panel?
Answer provided by our tutors
let
w = the width of the rectangular solar panel and w>0
l = the length of the rectangular solar panel and l>0
rectangular solar panel has a length that us 12 in shorter than 4 times its width
l = 4w - 12
the perimeter of the panel is 216 inches
2*(w + l) = 216
by solving the system of equations
l = 4w - 12
2*(w + l) = 216
we find
w = 24in
l = 84in
the dimensions of the rectangle are 24in and 84in.