Question

A 12-foot ladder is leaning against a wall. The bottom of the ladder is 5 feet away from the bottom of the wall.


Approximately how high up the wall does the top of the ladder reach?



A.
2.4 feet







B.
7.0 feet







C.
13.0 feet







D.
10.9 feet

Answer 1

use pythagoras's theorem

Answer 2

Use the pythagorean theorem \(ladder^2\ =\ ground^2\ +\ wall ^2\)

Answer 3

Thank you. c:

Answer 4

you're welcome :)

Answer 5

Does anyone know the exact answer?

Answer 6

because I tried chibi robo3 's method and I can't figure the exact answer.