Mathematics, 04.10.2019 22:20, glogaming16
The great pyramid of king khufu was built of limestone in egypt over a 20-year time period from 2580 bc to 2560 bc. its base is a square with side length 756 ft and its height when built was 481 ft. (it was the tallest manmade structure in the world for more than 3800 years.) the density of the limestone is about 150 lb/ft3. (a) estimate the total work done in building the pyramid. (round your answer to three decimal places.) × 1012 ft-lb (b) if each laborer worked 10 hours a day for 20 years, for 340 days a year, and did 250 ft-lb/h of work in lifting the limestone blocks into place, about how many laborers were needed to construct the pyramid?
Answers: 1
Mathematics, 21.06.2019 20:30, brandisouthern9
Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?
Answers: 1
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