Testing methods for Khufu’s Pyramid

Among the Egyptian pyramids, the Pyramid of Khufu is the most spectacular. Its mystery and height have attracted many people. Its base is 230.6 meters long and is made of 2.3 million boulders weighing 2.5 tons.

The pyramid body is slanted. Even if someone climbs to the top of the tower, it is impossible to measure its height. Later, a mathematician solved this problem. Do you know how he did it?

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Answer: Pick a good day and start at noon Wait until the afternoon. The action begins when the sun's rays cast shadows on everyone and the pyramid. When the measurer's shadow is equal to his height, measure the length of the pyramid's shadow. This is the height of the pyramid. Because when the measurer's shadow is equal to his height, the sun's rays hit the ground at exactly a 45-degree angle.