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3.14×5눀×2+3.14×2×5×15简便计算

2025-04-03 01:36:25

推荐回答（3个）

回答1：

3.14×5²×2+3.14×2×5×15

=3.14×25×2+3.14×2×25×3

=3.14×50+3.14×50×3

=3.14×50（1+3）

=3.14×50×4

=3.14×200

=628

希望我的回答对您有帮助，有问题可以追问。

满意请及时采纳，谢谢！

回答2：

见图

回答3：

=3.14X（5X5+2X5X15）
=3.14X175
=549.5

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