The slope on a set of stairs is 7/10. If the stairs must rise 2.0 m, determine the horizontal length of the stairs, to the nearest tenth of a metre.

Question

I tried to draw a graph, but I got confused.

Answer 1

Sloe is rise/run.

7 : 10 :: 20 : x       product of means/extremes

7x = 200               divide both sides by 7

x = 28.57

 

The length of the step should be 28.6 m