Solved Exercises. Here I will explain how to calculate the volume of a regular pentagonal pyramid

The general formula for the volume of the pyramid is 1/3**(Ab*h). If you go in Universe Formulas to the area of the regular pentagon you will have 5/2**(L*ap). Substituting this

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For this we must multiply the perimeter of the pentagon by the apothem and then divide the result by 2. Once we have the area of the base (area of the pentagon), we multiply it by the height of the pyramid and finally divide by 3.