30.48cm
Algebraic Steps / Dimensional Analysis Formula
12
in
*
2.54 cm
1 in
=
30.48
cm
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55.5 inches is 140.97 cms.
110 cms = 41.31 inches (to 4 sf)
11.02 inches.
11.69 inches.
There are 2.54 cms per inch and 12 inches per foot. Therefore, the answer is 2.54[(12 X 11)+ 3] = 343 cms, to the justified number of significant digits.