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更新1:
要用指數～ｐｌｚ～
更新2:
要用指數～例如：7.4x10^6
有條ｍａｔｈ唔識～ｈｅｌｐ～
2007-09-24 3:23 am
Suppose Mr Cheung's heart beats 72 times per minute and his life-span is 90 years. How many times will his heart beat in his whole life?
請列明步驟～ｔｈｘ～！
請列明步驟～ｔｈｘ～！
回答 (3)
2007-09-24 3:31 am
✔ 最佳答案
Suppose Mr Cheung's heart beats 72 times per minute and his life-span is 90 years. How many times will his heart beat in his whole life?72 x 60 x 24 x 365 x 90
=4320 x 8760 x 90
=3405888000
2007-09-24 4:03 am
=72x60x24x365x90
=3405888000
=3.41x10^9(3 sig. fig.)
=3405888000
=3.41x10^9(3 sig. fig.)
2007-09-24 3:26 am
72x60x24x365x90
=3405888000
=3405888000
收錄日期: 2021-04-20 16:27:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070923000051KK04443