SOLUTION: The base of a 15-ft ladder is 5 feet away from a wall. How far above the floor is the top of the ladder. Give answer to the nearest thousandth. Sentence problems are confusing

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Question 46666: The base of a 15-ft ladder is 5 feet away from a wall. How far above the floor is the top of the ladder. Give answer to the nearest thousandth.
Sentence problems are confusing can you help please.
Thanks
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Think of this forming a right triagle:
leg = 5
hypotenuse = 15
a%5E2+=+c%5E2+-+b%5E2
a+=+sqrt%28225+-+25%29
a+=+sqrt%28200%29+=+sqrt%282%2A2%2A5%2A2%2A5%29+=+10%2Asqrt%282%29
14.14 feet