THE RULES

[JujiDrool]

it's a trick question. any idiot can apply a formula. any idiot can memorize ρ=m/V - the formula was provided with the problem in order to fool people who rush to answer the question incorrectly thinknig they are geniuses because they divided one value by another, whoopty fucking doo.

ρ=m/V is the density of a solid mass. tanks are hollow.
That's why there even was a fifth option of "no answer", which is the correct answer.

no you were wrong and it wasn't a trick question

post the actual questiona nd you will see

density measures density... density varies depending on whether it is solid liquid or gass but with the mass and volume provided you can work out the density.

so in fact you are wrong again, a mass does not have to be solid to work out its density you moron.

Juji was correct. And you are STILL making an idiot of yourself.

[blumpkin blownuts]

density measures density... density varies depending on whether it is solid liquid or gass but with the mass and volume provided you can work out the density.

so in fact you are wrong again, a mass does not have to be solid to work out its density you moron.

A hollow tank built from 30kg of steel DOES NOT have the same density of a solid lump of 30kg steel.
The tank (assuming it contains a light gas, like air) floats on water. The lump sinks. The densities are not equal.