Question

A cylindrical tank is 10 metres high and has a radius of 3 metres. If it is filled to an ullage of 2 metres, with oil of Relative Density 0.7, find the mass of oil.​

Answer 1

$Density = \frac{Mass}{Volume} \\ \\ = > 0.7 = \frac{Mass}{ \frac{22}{7} \times 3 \times 3 \times 8 } \\ \\ = > 0.7 = \frac{Mass}{ \frac{1584}{7} } \\ \\ = > Mass = 0.7 \times \frac{1584}{7} \\ \\ = > Mass = 1584 \times 0.1 \times 997 \\ \\ = > Mass = 158.4 \times 997 \: \: \\ \\ = > Mass = 1,57,924.8 \: kg$