One yard in SI units is equal to:

Question

Accepted Answer

1. **Identify the Unit:** The 'yard' is a unit of length in the Imperial and US customary systems.
2. **Conversion to SI:** The SI unit of length is the **metre** (m). 
3. **Conversion Factors:** 
   - 1 yard = 3 feet.
   - 1 foot = 12 inches.
   - 1 inch = 2.54 cm (exactly).
   - Therefore, 1 yard = $3 	imes 12 	imes 2.54$ cm = 91.44 cm.
4. **Final Calculation:** Converting centimetres to metres ($1 	ext{ cm} = 10^{-2} 	ext{ m}$): 
   $$ 1 	ext{ yard} = 91.44 	imes 10^{-2} 	ext{ m} = 0.9144 	ext{ m} $$
5. **Source Verification:** NCERT Appendices explicitly state: $1 	ext{ yard} = 36 	ext{ inches} = 0.9144 	ext{ metre}$ , .

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