Help me complete the missing information, formulas given at the bottom of picture

Mass Data and Calculations Table M2 (kg) Ma (kg) M. (kg) M (kg) On-1 (kg) OM (kg) M1 (kg) Aluminum 0. 6175/ 0.01351 0.0175 0. 0175 0.0175 Brass 0. 0655/0. 0653 0. 0655/ 0. 0651 6 . 66535 Iron 0. 05 1 0. 054 0. 031 0. 051 0 . 05171 Zero Reading of the calipers Length Data and Calculations Table L1 (m) L2 (m) L3 (m) La (m) I (m) On-1 (m) Or (m) Aluminum 6.049/ 0. 050 0 050 /6 048 16.049 25 Brass 0 . 05 0 3 / 0 . 0501 0 6490 6 0502 0. 05012 Iron . 052 0. 054 . 051 0.052 6. 65 22 Diameter Data and Calculations Table d1 (m) d2 (m) d3 (m) d4 (m) d (m) On-1 (m) ad (m) Brooks/Cole Aluminum 6. 612 6 / 0. 6125 0.0126 / 0. 0125 0.0126 Brass . 01 71 . 6120 0. 0118 / 6. 0121 6:012 Iron 6.12 1 cm 0. 121 0 119 /0.171 6. 1205 Density Data and Calculations Table Err (kg/m3) % Error Perp (kg/m)) ap (kg/m) Pknown (kg/m3) Aluminum 2. 39 x 163 2.7 x 10^3 1 09 x103 3 1 Brass 8.4 x 10^3 7. 461 10' 0 . 921 105 11 1. Iron 8.3x103 11.3 x 1043 3. 85 x 103 SAMPLE CALCULATIONS 1. M = 2. On-1 = 3. am = On-1 On-1 Vn V4 4M 4. p = 5. ap = PV (M OM ) 2 + ( 21 ) 2 + 4 ( ad ) 2 = 6. Error = p - Pknown 7. % Error = P-Pknown x 100% = Pknown