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25x3.14等于多少

答案是7.065

中间那点是神马意思? 25*3=75 14那道题是7

191.8215

解: 2.25×3.14×3.14×3 =7.065×3.14×3 =22.1841×3 =66.5523 大约等于67.

3.14+25×6 =3.14+150 =153.14。

3.14x25=78.5

12.5

12.25x3.14一2.25x3.14 =(12.25-2.25)×3.14 =10×3.14 =31.4 乘法分配律

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