Which lengths are the legs?
A ladder leans against a vertical wall. Its foot is 9 m from the base of the wall, it reaches 12 m up the wall, and the ladder itself is 15 m long. Which equation correctly applies Pythagoras’s theorem to this situation?
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Not quite.Try again, or ask for a hint.
The hypotenuse is the side opposite the right angle. Here, that's the slanted side, not whichever number happens to be given last. Find that side first, then decide which equation matches it.
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