Question

A ladder leans on a wall and reaches 2.5m high. The foot of the ladder is 0.9m from the base of
the wall. How long is the ladder?
5.

Answer 1

2,5^2+0.9^2=x^2
6,25+0.81=x^2
x=sqrt(6,25+0.81)
x=2,657... \[\approx\] 2,6

Answer 2

Ignore the five

Answer 3

Do you understand the pythagorean theorem?

Answer 4

oh and, that should probably be rounded to 2,7*... not 2,6.