Okay, here we have this:
Considering the provided information, we are going to calculate the requested mass, so we obtain the following:
Then we will substitute in the following formula:
density=mass/volume
0.9 g/cm^3=mass/157.08 ft^3
mass=0.9 g/cm^3*157.08 ft^3
Then we will convert the volume from cubic feet to cubic centimeters in order to operate:
mass=0.9 g/cm^3*(157.08 ft^3*(28317 cm^3/1 ft^3)
mass=0.9 g/cm^3*4448034.36cm^3
mass=4003230.924 g
Finally let's convert the mass to kilograms:
mass=4003230.924 g*(1kg/1000g)
mass=4003.230924 kg
Finally we obtain that the mass of the cylinder is approximately 4003.230924 kg.
