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One inch is equal to ____ CM

March 19, 2026Physics

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Answer

(c)

3 steps

Identify the standard conversion factor for inches to centimeters.
The exact definition is:
$1\,\text{inch} = 2.54\,\text{cm}$
Verify using millimeter definition (optional confirmation).
1 inch $= 25.4$ mm exactly.
Since 1 cm $= 10$ mm,
$1\,\text{inch} = 25.4\,\text{mm} \times \frac{1\,\text{cm}}{10\,\text{mm}} = 2.54\,\text{cm}$
Compare with given options (all in cm).
(a) 2.34 cm $\neq 2.54$ cm

(b) 2.44 cm $\neq 2.54$ cm

(c) 2.54 cm $=$ 2.54 cm (matches)

(d) None of these (incorrect, since (c) matches)

(c)

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