Answer :
Explanation: The 17 foot ladder would be the hypotnuse of the triangle. The ladder is 8 feet from the building, giving you one of the legs. :p So if you square 17 and square 8 you get 289 - 64. 289 - 64 is 225. Then you find the square root of 225 and you get 15. I hope this answers your question!
Answer: 15
Answer: 15