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OpenStudy (anonymous):
The Great Wall of China is about 1500 miles long. The cross-section of the wall is a trapezoid 25 feet high, 25 feet wide at the bottom, and 15 feet wide at the top. How many cubic yards of material make up the wall?
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OpenStudy (anonymous):
3960000000 cubic feet of wall
OpenStudy (anonymous):
I realized that it said 1500miles not feet
OpenStudy (anonymous):
Snogging, communication goes a long way....
OpenStudy (anonymous):
3960000000 ft^3/27 ft^3*1yd^3 = 146666666.66666666666666666666667 yd^3
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