A ladder long leans against a vertical wall with its foot from the wall. How high up the wall does it reach?
Answer and explanation
Correct answer: C.
- Step 1: The ladder is the hypotenuse: . Step 2. m. **Answer: . Why not the others:** is what you get if you subtract the two lengths. is what you get if you add the squares and forget the root. is what you get if you add the two lengths.
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