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Stremma (στρέμμα) - Greek land area
Stremma is a regional metric unit of land area used in Greece, equal to one decare (1,000 square meters). Used in agriculture, real estate, and cadastral records throughout Greece.
- Names/aliases: στρέμμα (Greek), stremma, decare; abbreviations: στρ., str
- System: Metric (non-SI, regional)
- Exact relations: 1 stremma = 1,000 m² = 10 a = 0.1 ha
- Imperial/US equivalents: 1 stremma ≈ 0.247105381 acres ≈ 10,763.9104 ft²
- Typical examples: farm fields and olive groves measured in stremmata; property listings and land-use plans in Greece
Tatami mat (畳, jō) - Japanese flooring unit of area
Tatami mat is a traditional Japanese flooring module used as a practical unit of area; room sizes are often stated by the count of mats (jō). Dimensions vary regionally, so one tatami has no single national standard.
- Names/aliases: tatami, 畳 (jō); room size written as “n-jō”
- System: Traditional Japanese (non-SI)
- Typical sizes (area):
• Kyōma (Kyoto): 0.955 m × 1.910 m = 1.824 m² ≈ 19.63 ft²
• Chūkyōma (Nagoya): 0.910 m × 1.820 m = 1.656 m² ≈ 17.83 ft²
• Edoma/Kantōma (Tokyo area): 0.880 m × 1.760 m = 1.5488 m² ≈ 16.67 ft²
• Other regional modules exist; common range ≈ 1.55–1.82 m² per mat
- Room estimates: 6-jō room ≈ 9–11 m² depending on region; 8-jō ≈ 12–15 m²
- Construction note: buildings often use tatami modules as planning grids; mats are rectangular with length ≈ 2 × width