How long must a ladder be to reach a window 13 ft above the ground? For the sake of stability, it must be placed feet away from the base of the wall. Pythagorean Theorem

Question

How long must a ladder be to reach a window 13 ft above the ground? For the sake of stability, it must be placed  feet away from the base of the wall. Pythagorean Theorem

anonymous · Answer

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mrnood · Answer

there is a number missing from your post:

it must be placed  ??? feet away 

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L is the length of th eladder and is th e'hypotenuse' of the triangle

you know the other 2 sides (13 and ?)

use  Pythagoras to solve...