Answer:
15.5 inches
Step-by-step explanation:
Using the Pythagorean theorem; The square of the hypotenuse is equal to the sum of the squares of the two adjacent sides
The diagonal is the longest side of a rectangle so it becomes the hypotenuse
Let w represent the width
19^2 = 11^2 + w^2
19^2 - 11^2 = w^2
361 - 121 = w^2
240 = w^2
w = [tex]\sqrt{240}[/tex]
w = 15.5 inches
