Problema Solution
The length of a rectangle is 3 cm more than twice its width. The perimeter is 165 cm. Find the length of the rectangle.
Answer provided by our tutors
let
w = the width of the rectangle and w>0
l = the length of the rectangle and l>0
the length of a rectangle is 3 cm more than twice its width
l = 3 + 2w
the perimeter of the rectangle is 165 cm
2*(w + l) = 165
by solving the system of equations
l = 3 + 2w
2*(w + l) = 165
we find
l = 56 cm
w = 26.5 cm
the length of the rectangle is 56 cm.