Problema Solution
The width of a rectangle is 9 centimeters less than the length. The area is 136 centimeters. Find the length and the width of the rectangle.
Answer provided by our tutors
let
l = the length of the rectangle, l>0
w = the width of the rectangle, w>0
the width of a rectangle is 9 centimeters less than the length
w = l - 9
the area is 136 centimeters
l*w = 136
plug w = l - 9 into the last equation
l(l - 9) =136
by solving we find
l = 17 cm
click here to see the step by step solution of the quadratic equation
w = 17 - 9
w = 8 cm
the width is 8 cm.
the length is 17 cm.