Question 1102643
The width after turning up the edges will be w = 19 - 2h, where h is the height
The cross-sectional area A = w*h = 18
h(19-2h) = 18
2h^2 - 19h + 18 = 0
Using the quadratic formula, the two solutions are:
h = 1.1 and 8.4
Ans: 1.1 inches and 8.4 inches