In the line, four feet of paper (about 8 square feet) and a flat ruler: 33.3cm×33.3cm.
For example, the calculation method of a four-foot paper is 137×68×0.0009=8.3844 (about 8 square feet), and the specifications of a four-foot paper are not equal. So people in the industry usually calculate according to 8 square feet.
Extended data:
The following are the general differences between several paper specifications:
Xuan paper is generally divided into four feet, five feet, six feet and two feet, and now there are special formats. The ruler in calligraphy and painting calculation is different from the ruler measured now. It refers to the Lu Banchi invented by Luban, the originator of China carpenter.
1, sketch 33×33cm 1 square foot.
2. Sketch 45×33 cm 1.4 square feet
3, four feet and three open 68 x 45cm 2.8 square feet.
4, four feet four open 34 x 68 square feet
5. Four-foot barrel square 68×68 cm 4 square feet
6. Four-foot divider 34× 136 cm 4 square feet
7. Four-foot paper 68× 136cm 8 square feet
8. Five-foot full paper153x84cm11.5 square feet.
9. Six-foot paper is 96× 178cm 15.6 square feet.
10, eight-foot paper 122×244cm 27 square feet
1 1, Zhang Er whole paper 144×366cm 48 square feet.
12, the whole paper of Liu Zhang is 200×498cm 92 square feet.
Calculation method:
1, length * width *9= square feet
(Example: four-foot paper: 1.36m×0.68m×9=8.32 square feet. Basis: 1 m2 equals 9 square feet, and the calculation unit is meters. )
2. Length × width /0. 1089= square feet
(Example: four-foot paper1.36m× 0.68m/0.1089 = 8.4 square feet. In centimeters, the cardinal number is: 33cm× 33cm = 1089cm2).
Baidu Encyclopedia-Xuan Paper