Hello there!
Volume = Length * Width *Height
Let's plug in the numbers we were given
Volume = 19 * 9 * 2
This means that our volum is 342 feet^3
But, now we need to convert this to gallons.
To do this, we must divide 342 by 0.134
342/134
This would mean that our volume is 2,552.2 gallons
Now, we must find the weight of the cake using the density: 4.37 pounds per gallon.
Well, we know that we have 2,552.2 gallons
This means we must multiply 2,552.2 by 4.37
This would give us 11,153.1
This means tat the cake weighs 11,153.1 pounds
So:
Volume = 2,552.2 gallons
Weight = 11,153.1 pounds
I hope I helped!
~ Fire