The relative density of steel is 7.8 find the mass of a solid steel cube of sides 10cm. What volume of the steel has a 8kg

Answer 1

mass?

To find the mass of the steel cube, we need to use its volume and density. The formula for the volume of a cube is V = s^3, where s is the length of one side. So, for this cube, V = 10^3 = 1000 cm^3.

The formula for density is density = mass/volume. If we rearrange this formula, we get mass = density x volume. Plugging in the values for density and volume, we get:

mass = 7.8 x 1000 = 7800 g or 7.8 kg (rounded to one decimal place)

For the second part of the question, we need to find the volume of the steel that has a mass of 8 kg. Rearranging the formula for density, we get volume = mass/density. Plugging in the values, we get:

volume = 8/7.8 = 1.03 m^3 (rounded to two decimal places)