问题
问答题
Each step of a staircase is 0.25 meter wide and 0.20 meter high, as shown in the figure above. All angles shown in the figure are right angles. If the height of the staircase is 3.6 meters and the landing at the top of the staircase is 1 meter wide, how long, in meters, is AB ？
答案
参考答案：
17×0.25+1=5.25m。
解析：
因为楼梯的总高度为3.6，则楼梯的总级数为：
[*]
又因为楼梯顶端的平台长度为1米，所以AB的长度为：17×0.25+1=5.25m
