Posted by **david** on Sunday, November 4, 2012 at 8:26pm.

A large canal will have a cross-section in the shape of an isosceles trapezoid. The top will be twice as wide as the bottom, and the depth will be 8.00 m. Because of the cost of the building materials, the bottom and two slopes sides are to measure 14.0 m altogether. What is the area of the cross-section?

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