How much water will a pvc pipe that is 6 inch diameter and 6 foot long hold?

To find this you need to find the volume of the pipe. To find the volume of a cylinder you multiply the area of the base times its height. So pi x 3² = 28.26  28.26 x 72 = 2034.72 cubic inches. So our answer is that it will hold 2034.72 in³ of water.