The height of the great Pyramid of Giza in Egypt originally was 150 m. and its square base was 230 m in an edge. It is said to have cost Php 50 for each square meters of lateral surface. What was its cost?

What was its cost?

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\(Costs=4\times \sqrt{(230m)^2-(\frac{150m}{2})^2}\times \frac{150m}{2}\times\frac{Php\ 50}{m^2}=\color{blue}Php\ 3\ 261\ 422\)

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