A quality control engineer is testing a rectangular specimen of a new steel alloy for aerospace applications. The dimensions of the specimen are shown in the diagram below.
The mass of the specimen is 390 g. What is the density of the alloy in kg/m3\text{kg/m}^3kg/m3?
Use the equation: density=mass÷volume\text{density} = \text{mass} \div \text{volume}density=mass÷volume
0.78 kg/m30.78\text{ kg/m}^30.78 kg/m3
7.8 kg/m37.8\text{ kg/m}^37.8 kg/m3
7800 kg/m37800\text{ kg/m}^37800 kg/m3
19500 kg/m319500\text{ kg/m}^319500 kg/m3