When the cross-section is a hexagon, the prism is called a hexagonal prism. The surface area is made up of the end faces and rectangular faces that join them. To calculate the total surface area ...

You can build a model of the Great Pyramid, but first you need to scale it down. To do this, you will need to make the pyramid 3,000 times smaller than it really is! To achieve that, every 30 ...

one area of the cemetery is bare, with no structures. Below the sand, it's a different story, archaeologists recently ...

At 146.5 m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.