About 2 x 1020 kg.
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My gosh this is exactly the same question as one of my HW questions! But anyway here: Ceres: 9.43 * 1020 kg Pallas: 2.11 x 1020 kg
A square or a rectangle is a 2-dimensional figure. It can have no mass.
Density = Mass/Volume = 4.2 units of mass/2units of volume = 2.1 units of mass per unit of volume.
The same 2 to 3 because the mass is directly proportional to the volume. Recall the relationship Mass = volume x density. Here density remains constant
Weight=mass x acceleration due to gravity = mass(lbs) x 32.1 (ft/s^2) So, mass(lbs) = (weight)/(32.1)