Question

The bridge will span a section that is 35 meters wide, with ends of the bridge set back 2.5 m from each river bank. The engineer must apply right angle relationships because one river bank is 9 m higher than the other.

What is the final length of this bridge?

Answers

oobleck
so the total horizontal span of the bridge is 40m, with one end 9m higher.
The final length z of the bridge is thus
z^2 = 40^2 + 9^2

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