How many bricks with dimensions 250mm * 120mm * 65mm can be transferred by a machine with a lifting capacity = 4t?

How many bricks with dimensions 250mm * 120mm * 65mm can be transferred by a machine with a lifting capacity = 4t? The density of the brick is 1800kg / m3.

To calculate the number of bricks, we will use the inequality: mm ≥ mk; mm ≥ n * mк1; mm ≥ n * ρк * V; mm ≥ n * ρк * a * b * c and n ≤ mm / (ρк * a * b * c).
Variables and constants: mm – carrying capacity of the used machine (mm = 4t = 4 * 10 ^ 3 kg); ρк – brick density (ρк = 1800 kg / m3); a – brick length (a = 250 mm = 0.25 m); b – width (b = 120 mm = 0.12 m); c – height (c = 65 mm = 0.065 m).
Calculation: n ≤ 4 * 10 ^ 3 / (1800 * 0.25 * 0.12 * 0.065) ≈ 1139.6 bricks and n = 1139 bricks.