For structural reasons bridges often have criss crossing trusses underneath. These trusses make many triangles like the figures below. Use the second figure to help find the missing length. Rom to the nearest tenth. x 115 ft Cross section of part of bridge *Note: Image taken from http://www.rogersconnection.com/triangles/ A. 8.1 feet X 1632.5 feet 87 C. 77.0 ft D. 171.6 ft

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