A ratio is adequate for this so,
273 ft3/7 ft = x ft3/3 ft and then x = 117 ft3 for the small barrel and therefore, the large barrel volume is
273 - 117 = 156 ft3
Mark J.
tutor
Julia..... Since there was no other information given, I assumed the barrels were straight-sided with the same diameter (my idea of similar!). Perhaps not a good assumption but with no other information given, the problem cannot be solved unless you have some idea what "similar" means in this example?
If I assume that the barrels are both straight-sided but with different diameters, the 4D1^2 + 3D2^2 = 347.59 ft3 (From Volume1 + Volume2 = 273). Unless you know something about the diameter relationship between the two barrels, The problem has infinite solutions or more practically, you cannot arrive at 81?
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05/23/19
Julia E.
Ok, thank you for your help!
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05/23/19
Mark J.
tutor
Very welcome!
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05/23/19
Julia E.
That is what I had been doing but the site says that the volume of the smaller barrel is 81 but I need to be able to explain how to get to this answer and I don't understand it.05/23/19