SOLUTION: An irrigation canal is 10 kilometers long and 2 meters deep.it is 4 meters wide at the top and 2 meters wide at the bottom .how many cubic meters of earth were excavated to make th

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Question 1170094: An irrigation canal is 10 kilometers long and 2 meters deep.it is 4 meters wide at the top and 2 meters wide at the bottom .how many cubic meters of earth were excavated to make the canal
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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An irrigation canal is 10 kilometers long and 2 meters deep.
it is 4 meters wide at the top and 2 meters wide at the bottom .
how many cubic meters of earth were excavated to make the canal
:
Find the area of the trapezoid shape of the canal
A = h%2F2(a+b)
A = 2%2F2(2+4)
A = 6 sq meters
1 km = 1000 meters
6 * 10000 = 60,000 cu meters of earth