The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55

Question

The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55 million. To prepare for the footings, etc, 30.0x10^5 cubic yards of dirt were removed. The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x10^3 cubic feet. During construction, 40.0x10^3 cubic yards of concrete, 11.9x10^3 tons of reinforcing steel, and 5.00x10^2 tons of structural steel were utilized. The roof material includes an outer layer of Teflon-coated glass and an inner layer of woven fiberglass. Given this information, answer the following: If removed evenly over the 10.0 acres, how deep a hole would be formed as a result of the excavation? If the two-layer fiberglass roofing material has a mass of 0.667 lbmft2, what is the total mass of the roof? If 10.0 inches of wet snow collected on the roof (this happened in 1982), what is the added mass on the roof? (Assume 1 inch of water equals 10 inches of snow).

Explanation / Answer

this is wrong. 10 acres = 48400 , how could you do all of this and not realize that?

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