Table 1 is just a conversion and has 5 significant figures

Table 2 and 3 is only conversion or dimensionsional Analysis.

Make an Analysis of Data. I. Analysis of Data

Data Table (1): Lab Table Length, L 8ft 2.4384 m 243.84 cm 2438.4 mm Width, W 3ft 0.91440 m 91.440 cm 914.40 mm Area, A 24 ft2 2.22967296 m 22296.72 cm 2229672.96 mm 1.4932 m 149.32 cm 1493.2 mm Data Table (2): Rectangular Block Length, L 0.097 m 9.7 cm 97 mm Width, W 0.049 m 4.9 cm 4.9 mm Height, H 0.525 m 5.25 cm 52.5 mm Surface Area, A 2.48x102cm 248.63 cm 1.17x10* mm Volume, V 2.5x10 m 249.5325 cm 2.5x10 mm Mass, M 0.165 kg 165 g Density, p 662.65 kg/m 0.66 g/cm Data Table (3): Cylindrical Block Diameter, d 0.0504 m 5.04 cm 50.4 mm Radius, r= d/2 0.0252 m 2.52 cm 25.2 mm Height, h 0.102 m 10.2 cm 102 mm Surface Area, A 2.01x10* m' 2.01x10' cm 2.01x10" mm Volume, V 2.03x10 m 2.03x10' cm 8.08x10' mm Mass, M 0.1932 kg 193.2 g Density, p 951.72 kg/m 0.95 g/cm