A thin piece of wood of uniform density in the shape of an equilateral triangle with side length 6 cm weighs 36 grams. A second piece of the same type of wood, with the same thickness, also in the shape of an equilateral triangle, has side length of 10 cm. Which of the following is the weight, in grams, of the second piece?
60.0
80.0
100.0
120.0
144.0
