Answer:
Mass, m = 0.00284 kg
Step-by-step explanation:
Given that,
Density of mercury,

Height of mercury column, h = 1.1 m
Diameter of mercury, d = 0.492 meters
Radius of mercury column, r = 0.246 m
We need to find the mass of a drum. The density is given by :

V is the volume of mercury column



m = 2.84 grams
or
m = 0.00284 kg
So, the mass of a drum full of mercury is 0.00284 kg. Hence, this is the required solution.