To calculate the weight of a certain length of aluminum strip, you need to know the strip's length, width, thickness, and the density of aluminum. The density of aluminum is approximately 2700 kg/m鲁. The formula to calculate the weight is: Weight = (Length 脳 Width 脳 Thickness 脳 Density) / 1000. Convert all measurements to consistent units (SI units are preferred). For example, if you have a strip that is 1 meter long, 0.01 meters wide, and 0.001 meters thick, the weight would be calculated as follows: (1 脳 0.01 脳 0.001 脳 2700) / 1000 = 0.027 kg.