Shangri-La Hotel paved the stairs with red carpet all the way to the second floor, but the staff did not measure the length of the stairs.

1 The stair bag of conventional stairs needs 43 cm. Generally, the stair width is about 1.75 m, but the carpet width is 4 m. If this staircase is paved, only two stairs can be broken, that is, the width of 2 m. The calculation of such a staircase is 0.43 m *2 m =0.86 square meter.

Generally, the number of stairs on a floor is about 34, so we can get the area of all steps according to the area of each step above: 0.86 square meters *34=29.24 square meters.

In general, a staircase on the first floor has a corner, and the approximate width of the corner can be obtained according to the width of the staircase. 1.75m+ 1.75m+ gap between two stairs =4m. Because the width of the carpet is 4m, we usually calculate the extra loss according to 4m, so the length of this transfer is about 2m, so we can calculate the square of the corner 4m * 2m = 8m2.

Through the above calculation, we can get the approximate carpet area for a staircase, which is 29.24 square meters +8 square meters =37.24 square meters.