Answer: Using Pythagoras Rule the ladder touches 13.75ft ~ 14ft up the wall.
Step-by-step explanation: Using the Pythagoras Rule the Hypothenus is the leaning hieght of the ladder 15ft
And the base is 6ft. Now let's find the height of the wall h¹
h¹ = √{15² - 6²}
h¹ =√{225 - 36}
h¹ = √189
= 13.74ft
