One type of lubricating oil weighs approximately 52 pounds per cubic foot, or 7 pounds per gallon. a 42-gallon barrel will hold approximately how many cubic feet of such oil?

Barrel will contain 5.65 cubic feet of oil.

Step-by-step explanation:

A 42 gallon barrel will contain lubricating oil  = 42 gallons

Now we will convert this volume of lubricating oil into pounds first.

∵ 1 gallon oil weighs = 7 pounds [ given ]

∴ 42 gallons oil will weigh = 7×42 = 294 pounds

Now we will find the volume of oil in cubic feet.

∵ 52 pounds of oil has the volume = 1 cubic feet

∴ 1 pound of the oil will have the volume = cubic feet.

∴ 294 pounds of oil will have the volume = cubic feet.

Therefore, barrel will contain 5.65 cubic feet of the oil.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are