A thin piece of wood of uniform density in the shape of a square with side length 4 inches weighs 20 ounces. A second piece of the same type of wood, with the same thickness, also in the shape of a square, has side length of 6 inches. Which of the following is the weight, in ounces, of the second piece?
30.0
35.0
40.0
45.0
50.0
