The pyramid you are referring to is the Great Pyramid of Giza, which is the largest of the three pyramids in the Giza Necropolis in Egypt. It is also the oldest of the Seven Wonders of the Ancient World. The Great Pyramid was built for the Fourth Dynasty pharaoh Khufu over a period of 20 years, and it originally stood at 146.5 meters (481 feet) tall. However, over the centuries, the pyramid has lost some of its height due to erosion and the removal of its outer casing stones. Today, the Great Pyramid stands at 137 meters (449.5 feet) tall.

Pyramid schemes are financial scams. They are illegal in many countries, including the United States. Pyramid schemes work by recruiting new members to pay a fee to join. The new members are then expected to recruit more members, and so on. The only way to make money in a pyramid scheme is to recruit new members. As the number of new members declines, the pyramid scheme eventually collapses, and most members lose their money.

Here are some tips to avoid falling for a pyramid scheme:

• Be wary of any investment opportunity that promises high returns with little or no risk.
• If you are asked to pay a fee to join an investment opportunity, be suspicious.
• Do your research on any investment opportunity before you invest.
• Be aware of the signs of a pyramid scheme, such as the emphasis on recruiting new members and the lack of focus on selling products or services.

If you think you have been involved in a pyramid scheme, you should contact your state’s securities regulator. You can also file a complaint with the Federal Trade Commission (FTC).