Question

How far up a wall will a 17m ladder reach, if the foot of the ladder must be 8m from the base of the wall?​

Answer 1

Answer:

15m is the answer

Step-by-step explanation:

using Pythagoras theorem,

${b}^{2} = {17}^{2} - {8 }^{2} \\ {b}^{2} = 289 - 64 \\ {b}^{2} = 225 \\ b = \sqrt{225} \\ b = 15m$