Over a century and a half ago, wood was milled a true 2" x 4" ....thus 2x4 .....the same with 2x6, 2x8 ....and so on. However it was "rough sawn" lumber. Wood size standards came about in the 1920 's or so. still made chnges in the mid 60's
But the need for more finished lumber drove sawmills to go through another step in the milling process.. saw mills were crude and milled in crude dimentions. if the mill surfaced one side it was S1S......Surfaced ! Side.... S2S ..and so one.
Economics was the real player in all this ...The new surfaced sizes became the standard...
Lumber dimensions are only approximate.
Diameter X 3.14159265 divided by 4 X diameter X diameter. 2 * 3.14159265 / 4 * 2 * 2 = 6.2831853 square inches
Approximately 3 1/2 X 3 1/2 inches.
2 x 4 x 6 = 48 2 x 4 x 2 = 16 2 x 6 x 2 = 24 48 + 24 + 16 = 88 square inches
It is: 2 feet times 2 feet = 4 square feet
The VOLUME is 4 x 2 x 6 = 48 inches cubed
48 cubic inches
There are 25.4 millimetres in one inch. There are 12 inches in one foot. Therefore, 4 feet 2 inches is equal to (4 x 12 x 25.4) + (2 x 25.4) = 1270 millimetres.
12 x 4 = 48, + 2 : 50 inches
There are 36 inches in one yard. Therefore, 2 yards 4 inches is equal to (2 x 36) + 4 = 76 inches.
4 feet 9.5 inches x 2 feet 2 inches.
A 2 x 4 'stud' is technically 92-1/2 inches. All other 2 x 4 lengths are 'boards' of 96, 120 and 144 inches.
There are 0.254 decimetres in one inch. There are 12 inches in one foot. Therefore, 2 feet 4 inches is equal to (0.254 x 12 x 2) + (0.254 x 4) = 7.112 decimetres.
There are 12 inches in one foot. There are 3 feet in one yard. Therefore, 4 yards 2 feet is equal to (4 x 12 x 3) + (2 x 12) = 168 inches.
4 x 4 x 2 = 32 cubic inches.
Diameter X 3.14159265 divided by 4 X diameter X diameter. 2 * 3.14159265 / 4 * 2 * 2 = 6.2831853 square inches
4 feet 5 inches x 1 foot 11 inches x 2 feet 6 inches.
Approximately 3 1/2 X 3 1/2 inches.