Question

Fire fighter have a 17m extension ladder.in order to reach 15m up a building should the foot of the ladder be placed

Answer 1

Answer: 8m

Step-by-step explanation:

Using pythagoras theorem

17^2 = 15^2 - x^2

289 = 225 - x^2

289-225 = x^2

64= x^2

8 = x

The foot of the ladder should be at 8m