Polyethylene plastic bags know how to calculate the weight of rice.
Formula for calculating the weight of polyethylene plastic bags: W= length × width × thickness × density ×2. The unit of length is centimeters, and the unit of weight is grams.
Polyethylene plastics can be divided into high density polyethylene (density is 0.940 ~ 0.965g/cm3) and low density polyethylene (density is 0.9 15 ~ 0.935g/cm3) according to different densities.