Question 498424
What is the weight of a 50ft fire hose filled with water if the hose is 3" in diameter and the weight of the empty hose is 35lbs?
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Find the volume of the hose.  It's a cylinder.
{{{vol = pi*r^2*h}}}
r = d/2 = 1.5 inches
h = 50 ft = 600 inches
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Get the volume in cubic inches
Divide that by 1728 to get cubic feet
1 cu ft of water weighs apx 62.4 pounds
Add the 35 pounds for the hose to that.