A water trough is
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Answer:
Step-by-step explanation:
Use Pythagorean's Theorem for a right triangle. Your best bet when learning/visualizing word problems is to draw a picture, then learn how to visualize in your head over time.
The radical can be further simplified because 135 is the product of 9 and 15. 9 has a perfect root of 3.
meters or 11.62 meters