SOLUTION: a 20 ft ladder is placed against a building so that the foot of the ladder is 12 ft. from the foot of the building. How high up the building does the ladder reach in feet?

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Question 1163640: a 20 ft ladder is placed against a building so that the foot of the ladder is 12 ft. from the foot of the building. How high up the building does the ladder reach in feet?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Horizontal leg 12 feet
Hypotenuse 20 feet
Vertical leg, unknown; this triangle is a right triangle. You know what to do.

Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.

Try to see classic (3,4,5) right angled triangle behind your post.