A16 foot ladder rests against the side of a house and the base of the ladder is 4 feet away. how high above the ground is the top of the ladder? round to the nearestt tenth of a foot. a. 15.5 feet b. 16.5 feet c. 20 feet d. 240 feet

First you use the Pythagorean theorem, you take 16squared minus 4squared equals b squared. 16 squared will  equal 256 and 4 squared will equal 16.
256 minus 16 is 240, take the square root of 240 and you get, (with rounding to the nearest tenth), 15.5 feet

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