You're pretty much up a creek. You can find the volume using only a ruler, but without a way to find the mass, you will not be able to determine the density.
If this rectangular solid is actually in your possession, then you would measure it and calculate the volume, after which you can derive the density by dividing the mass by the volume. If it is not in your possession, then you are clearly being asked to call upon your psychic powers to solve this problem.
A very common instrument for the direct measurement of the density of a liquid is the hydrometer, which measures the volume displaced by an object of known mass. A common laboratory device for measuring fluid density is apycnometer; a related device for measuring the absolute density of a solid is a gas pycnometer. Another instrument used to determine the density of a liquidor a gas is the digital density meter - based on the oscillating U-tube principle.
That depends on the liquid and the solid. Liquid mercury has a very high density. Liquid gasoline has a very low density. At the melting point the density of a liquid and a solid are almost the same.
Density (kg/m3) = mass (kg)/Volume (m3) So to find the density of the wooden block, the triple beam balanced is used to calculate the mass and the metre rule is used to measure the height, length and width of the wooden block. Then the volume is calculated by multiplying the thee distances obtained from the ruler. Finally the density is calculated using the equation: Density (kg/m3) = mass (kg)/Volume (m3)
Density= mass/volume
How can you?? If u dont know the width or the volume
If you have a ruler then you could measure the length width and height and then multiply them together. (LWH is the formula)
Density is weight divided by volume. In the case of a rectangular solid, volume is length times width times height.
Measure the solid to determine its length, width, and height. Multiply all three to get its volume. Weigh the solid to determine its weight. Divide weight by volume to get density. Convert as needed to the appropriate units.
A ruler or tape measure.
You multiply its density by its volume.
on a balance
Volume of a rectangular solid. V = lwh
Use a ruler, measuring tape or other device for measuring length.
Density = Mass / Volume. There is not an instrument that will measure both so you will need to measure them separately and calculate the density.
A ruler to find the measures of the edges and a brain to multiply them together.
If this rectangular solid is actually in your possession, then you would measure it and calculate the volume, after which you can derive the density by dividing the mass by the volume. If it is not in your possession, then you are clearly being asked to call upon your psychic powers to solve this problem.