What is the mass of water (in grams and pounds). contained in a 100. foot long pipe that has an internal diameter of 6.5 centimeters? The density of water is 1.00 g/ cm^3. The volume of a cylinder is (pi)r^2L.

Question

What is the mass of water (in grams and pounds).  contained in a 100. foot long pipe that has an internal diameter of 6.5 centimeters?  The density of water is 1.00 g/ cm^3. The volume of a cylinder is (pi)r^2L.

Steve · Answer

mass = volume * density v = pi (6.5cm/2)^2 (100ft * 30.48cm/ft) = 101142 cm^3 you have the formulas and the numbers -- what's the problem?

Damon · Answer

r = 6.5/2

Lilly · Answer

Where did you get the 2 to divide by? and what about the 30.48? Not sure of how to set this problem up. 6.5/2= 3.25 and I do not see that in the problem?