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轻松片刻 --- 算数题. [Copy link] 中文

Rank: 4

Post time 2004-11-24 14:29:50 |Display all floors
某日, 俺订了一个12寸的匹萨. 可15分钟后店员告我12寸的卖光了, 建议换成一个9寸的再加一个6寸的, 且按12寸的价格. 末了, 还说俺赚了.

大伙儿说是赔还是赚?

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Rank: 4

Post time 2004-11-24 14:32:38 |Display all floors

不赔不赚?

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Rank: 8Rank: 8

Post time 2004-11-24 14:36:28 |Display all floors

it is easy

You'd better weigh the two pizza respectively ,and then get the total weight to see if it is bigger than the 12" one. Just kidding!

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Rank: 6Rank: 6

Post time 2004-11-24 14:44:12 |Display all floors

赔了!

当然是赔了!圆面积=πRR。π(9*9+6*6)=π117 < π12*12=π144
商家真会做生意!这题真好玩!

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Rank: 4

Post time 2004-11-24 14:50:07 |Display all floors

数学忘差不多了。

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Rank: 4

Post time 2004-11-24 14:57:49 |Display all floors

好精明的Copchen, 猛的还以为你是上海人呢!

12寸的面积: 3.1416*6*6=113.1 平方寸
9寸的面积: 3.1416*4.5*4.5=63.6 平方寸
6寸的面积: 3.1416*3*3=28.3 平方寸
113.1-63.6-28.3=21.2平方寸

俺算给店家看, 他只好又补给俺一个6寸!

所以, 口算不好的, 最好带着计算器去吃匹萨.

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