The volume of a cylinder is (pi) R2 L
Radius = (1/2) (1.75) = 1/2 x 7/4 = 7/8 inch
Length = (100 x 12) inches
Volume = (pi) (0.875)2 (1,200) = 2,886.34 cubic inches = 12.495 gallons.
That's the volume of the 100-ft of hose. We have no way of knowing
how much water is in it.
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There need not be any water at all in the hose! The capacity of the hose is 3.41 cubic feet.
50 feet of 2.5-inch diameter hose has a volume of: 1.7 cubic feet (12.72 liquid gallons)
14.7 gallons of water.
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
1.6 gallons of water.