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, 求该花坛的周长.(π=3.1415,计算结果保留三个有效数字)
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小明:不,我有另外一种解答方法,可以得到不同的答案,首先,将7498近似到百位,得到7500,接着再把7500近似到千位,就得到8000.
你怎样评价小丽和小明的说法呢?
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