一個球體形狀的氣球漏氣,令半徑減少10%,求氣球體積百分減少
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更新1:
aa1991426,你的答案不正確,未可選你為最佳解答
問一條數學題
回答 (2)
2008-04-26 3:58 am
✔ 最佳答案
1-(1-10%)^3=100%-72.9%
=27.1%
2008-04-21 4:31 am
r=1-0.1=0.9
4/3(3.14)(r^3)=體積
當r=1
4/3(3.14)(1^3)=4.1867
漏氣後r=0.9
4/#(3.14)(0.9^3)=3.3912
3.3912/4.1867x100%
=81.0%
即減少了19%
4/3(3.14)(r^3)=體積
當r=1
4/3(3.14)(1^3)=4.1867
漏氣後r=0.9
4/#(3.14)(0.9^3)=3.3912
3.3912/4.1867x100%
=81.0%
即減少了19%
收錄日期: 2021-04-23 19:53:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080420000051KK03055