The base can be any shape: if it is a polygon the shape is called a pyramid. The cones you will see in exams will be circular based. The formulas for the volume and surface area of a cone will be ...

The surface area of a pyramid can be calculated by adding the area of the base to the sum of the areas of the triangular faces. If the base of the pyramid is a regular polygon, each of the ...

The team were able to "penetrate the sand surface ... the high pyramid density between Giza and Lisht (the site of Middle Kingdom burials), in what is now an inhospitable area of the Saharan ...