Find the mass of a 1.5 x 2 m steel door squared and 2 cm thick.

We calculate the mass of a steel door using the formula:
m = ρ * V, where ρ is the density of steel (ρ = 7800 kg / m³), V is the volume of the steel door (V = a * b * c, where a is the length of the steel door (a = 1.5 m), b – the width of the steel door (b = 2 m), c – the thickness of the steel door (c = 2 cm = 0.02 m)).
Let’s calculate the mass of the steel door:
m = ρ * V = 7800 * 1.5 * 2 * 0.02 = 468 kg.
Answer: The weight of the steel door is 468 kg.