The most common pyramids are square-based, rectangular-based and triangular-based pyramids. The surface area of a pyramid can be calculated by adding the area of the base to the sum of the areas of ...

\(\text{volume of a pyramid} = \frac{1}{3} \times \text{area of base} \times \text{perpendicular height}\) The area of the base is \(5 \times 5 = 25~cm^2\). The area of each triangular face is \((5 ...

A 40-mile stretch of a long-gone branch of the Nile may explain why the ancient monuments were built where they were. Children ride a donkey near the Step Pyramid of Djoser in Saqqara, Egypt. Built ...