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1 mile = 1.4 km
1 yard = 3'
= 0.9144 m
1 ac = 0.4047 ha
= 4047 sqm
= 43560 sf
1 ha = 2.47 ac
100 sqf = 0.0029 ac
sqm / 3.3 > 평
1 kg = 2.2 lb (파운드)
social distance = 4' - 12'
1 board feet = 1' length x 1' width x 1" nominal thickness of lumber volume
(F-30) / 2 = C
(C*2) + 30 = F |
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