Learn: 1" = 2.54cm
9.5 / 2.54 = 3.74"
1" = 2.54cm is not rounded off. It is precise. All conversions of length, area, weight, and volume can be derived from this one fact, so this is the only one you need to memorize. Everything else can be calculated.
55.5 inches is 140.97 cms.
110 cms = 41.31 inches (to 4 sf)
1.48 inches.
60.2 inches
11.02 inches.
About 54 inches
10.2362 inches.
11.69 inches.
11.02 inches.
91.7 (91.7323) inches.
17.5 inches is 44.45cm
51.2 (51.1811) inches.