Question

What is the mass in kg of a

solid metal cuboid with
dimensions 4cm, 5cm and
3cm and a density of
20g/cm3

Answer 1

work out the area which is 4x5x3 this being 60 then divide this by 20 to get 3

The answer is 3kg

Answer 2

`density = mass / volume \\ 20 = x / 4 * 3 * 5 \\ 20 = x / 60 \\ 20 * 60 = x \\ x = 1200 \\ 1200 / 1000 = 1.2kg`