g8_masa =  np.array([2.25,0.21,0.13,1.24,0.44,1.31,0.45,0.9,0.18,0.2])
g8_largo = np.array([14.45,6.20,6.27,16.64,8.17,14.60,8.12,12.05,4.79,2.32])
g8_ancho = np.array([8.11,6.69,3.08,7.57,4.65,12.51,7.05,4.01,3.89,2.33])
g8_area = np.array([78.37,31.87,10.85,82.74,23.06,113.37,40.60,30.87,12.59,3.89])
a=0,88
error de a= 0,21