Arun placed an iron cuboid of dimensions 4 cm × 7 cm × 10 cm on a tray containing fine sand. He placed the cuboid in such a way that it was made to lie on the sand with its faces of dimensions (1) 4 cm × 7 cm (2) 7 cm × 10 cm (3) 4 cm × 10 cm. If the density of iron is nearly 8g/cm³ and g = 10 m/s², find the minimum and maximum pressure as calculated by Arun.