How much water will 1 meter of 54mm pipe hold?

To calculate the volume of water that 1 meter of a 54mm diameter pipe can hold, first find the radius (27mm or 0.027m) and use the formula for the volume of a cylinder: ( V = \pi r^2 h ). Plugging in the values, the volume is approximately ( V = \pi (0.027)^2 (1) ), which equals about 0.0023 cubic meters or 2.3 liters. Thus, 1 meter of 54mm pipe will hold approximately 2.3 liters of water.