Why were pyramids built in Egypt?

Answer: Tombs for pharaohs' afterlife

Tombs for pharaohs' afterlife ✓ — Correct! Pyramids were elaborate tombs for pharaohs, who were considered divine. Ancient Egyptians believed pharaohs needed their bodies preserved and supplied with treasures for the afterlife. Pyramids' massive scale reflected the pharaoh's importance and required huge resources—demonstrating state power while providing employment during Nile flood seasons.

Mathematical demonstrations only — Wrong. While pyramids demonstrate impressive mathematical and engineering knowledge, they were built as pharaoh tombs for the afterlife. Their religious purpose was primary; the mathematical precision served that goal.

Protect grain from floods — Wrong. That's a common misconception (confusing pyramids with granaries). Pyramids were tombs for pharaohs. Grain was stored in separate facilities. The pyramid shape and massive construction served religious beliefs about the afterlife and demonstrated pharaonic power.