Table 1: Diameter measurements.

Diameter measurement of Mexican currencies 50 cent cm 1 peso cm 2 pesos cm 5 pesos cm 10 pesos cm Real diameter 2.2 2.1 2.3 2.55 2.8 Measured diameter 2.196 2.0984 2.2936 2.5476 2.7976 Absolute error 0.004 0.0016 0.0064 0.0024 0.0024 Relative error 0.18% 0.07% 0.27% 0.09% 0.08%