Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §8.6 Force, Work, and Energy, #8 · Calculus · Applications of integrals

The great pyramid (height …—you can see it from Cairo) has a…

The great pyramid (height $50 0^{'}$ —you can see it from Cairo) has a square base $80 0^{'}$ by $80 0^{'}$ . Find the area $A$ at height $h$ . If the rock weighs $w = 100$ lb/ft $^{3}$ , approximately how much work did it take to lift all the rock?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §8.6 Force, Work, and Energy, #8

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