Calculate the work against gravity required to build a structure out of brick assuming brick has a density of 80 lb/ft^3.

The structure is a tower of height 20 ft and a square base of side 10 ft

Question

Calculate the work against gravity required to build a structure out of brick assuming brick has a density of 80 lb/ft^3.

The structure is a tower of height 20 ft and a square base of side 10 ft

amistre64 · Answer

perimeter, volume, what are we bricking in?

anonymous · Answer

We are building a pyramid. I am just having issues because I am unsure if I should express the area first as l^2 = (10)^2 = 100 or, if I should use similar triangles to set it as 5/20 = (l/2)/(20-y).

anonymous · Answer

So then my l^2 would be (1/4)*(20-y)

amistre64 · Answer

so its just the lateral area?

amistre64 · Answer

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