SOLUTION: How many cubic feet of earth must be removed in digging an artificial lake 21 ft. deep, if the level bottom is a rectangle 180 ft. by 20 ft. and the top is a rectangle 236 ft. by 2
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Question 1111889: How many cubic feet of earth must be removed in digging an artificial lake 21 ft. deep, if the level bottom is a rectangle 180 ft. by 20 ft. and the top is a rectangle 236 ft. by 27 ft.?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.
You need to know the volume of a truncated pyramid.
See the lesson
- Finding pyramidal frustum volume
in this site.
You will find there EVERYTHING you need.
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