Units of measurement
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Square yard (yd²)
Barn (b)
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Square yard (yd²)
A square yard (yd²) is a unit of area measurement equal to 9 square feet or 0.836127 m². It is used in construction and landscaping.
Barn (b)
A barn (b) is a unit of area measurement used in nuclear physics to describe atomic nucleus cross-sections. 1 barn = 10⁻²⁸ m².