please show tha calculation

A = area of piston = 244.88x10^-6 m^2

Table 1: Raw data Piston Mass (kg) + Added weight Added Weight 3.5 (kg) Without Piston Piston Added Mass Weight 0.5(kg) 0.5(kg) Added Weight Added Added Weight Weight 1.5(kg) 2 (kg) Added Added Weight Weight 2.5 (kg) 3(kg) 1 (kg) 0 19 35 55 78 95 110 140 157 Gauge Reading KN/M2 Fill the result table and Plot a graph of gauge reading against Pressure in the cylinder and gauge reading against % gauge error. Mass of the piston = 0.5 kg Gravitational Force = 9.81 m/s2 Force - Weight = Mass x Gravity p=F/A. % error = (Gauge Measure -- Pressure Calculated/ Pressure Calculated) * 100% Table 2: Result Added weight Total Mass M kg (Mp + Mw) Gauge Reading (G) KN/M2 0 Pressure in the cylinder (P) KN/M2 % Gauge error (G-P)/P *100 0 Without Piston 0 0 0.5 19 Piston Mass (kg) 1 35 Added Weight (kg) 1.5 55 Added Weight (kg) Styles Pane 2 78 Added Weight (kg) 2.5 95 Added Weight (kg) 3 110 Added Weight (kg) 3.5 140 Added Weight (kg)