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cycle exam

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
圓周率是圓周長與什麼的比率?   直徑  
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圓面積公式是半徑乘以半徑乘以什麼?   圓周率  
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有一圓的半徑是4公分,請問它的面積是多少?   50.24平方公分  
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有一圓的直徑是40公分,請問它的面積是多少?   400π平方公分  
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圓的構成要素有直徑、半徑、圓周和什麼?   圓心  
🗑


   

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Created by: CPMA
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