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著名的比萨斜塔矗立在意大利西北部的比萨古城内。它历经了200年的建造,塔高54.5米,分为8层,全部由大理石砌成。当比萨塔建成时,人们发现塔顶的中心点已经偏离垂直中心线2.1米了,也就是说,这塔是倾斜的。随着岁月的流逝,比萨塔的斜度正在不断加大。为了预测出比萨塔的寿命,科学家们进行了长时间的观测。经过40年的测量,人们发现,比萨塔每年平均会倾斜1.1毫米。但在以后的10年中,它每年平均倾斜1.26毫米。如果按这个速度继续倾斜的话,再过
The famous Leaning Tower of Pisa stands in the ancient city of Pisa in northwestern Italy. After 200 years of construction, the tower is 54.5 meters high and divided into 8 levels, all made of marble. When the Pisa tower was built, it was found that the center of the tower had been displaced 2.1 meters from the vertical centerline, that is, the tower was inclined. As time goes by, the slope of the pita tower is steadily increasing. In order to predict the life of the pita tower, scientists conducted long-term observations. After 40 years of measurement, it has been found that the pita tower is tilted on average by 1.1 millimeters per year. But for the next 10 years, it slopes an average of 1.26 millimeters annually. If you continue to tilt at this rate, then