Posted by **david** on Wednesday, October 10, 2012 at 3:17pm.

A chemical engineer designed a 625 ft long tailings channel to have a rhombus cross-section that is 9.5 ft deep, with walls sloping at an acute angle of 44„a.

A contractor placed a bid to excavate the canal at $195/cubic yard plus 20% profit. What was the bid?

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