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6下A5圓的認識(三)20200304
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同學請先觀看以下短片，然後完成1-5題題目。
https://youtu.be/LCfNyBsZ-Ss
書P.43及P.45答案(3月3日功課)
班別 Class :
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Choose
6A
6B
6C
6D
班號 Class Number:
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Your answer
姓名 Name (選填 Optional)
Your answer
1.在下面的圓中，O點是圓心，如果OA長4 cm，CD長多少cm?
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1 point
Your answer
2.一個圓的直徑是20 cm，它的半徑是多少cm?
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1 point
Your answer
3.一個圓的半徑是3.1米，它的直徑是多少米?
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1 point
Your answer
4.在下圖中，A點和B點分別是小圓的圓心，而O點是大圓的圓心，這三點都在同一條直線上。AB長8cm，大圓的直徑是多少 cm?
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1 point
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5.在下圖的長方形內有三個大小相同的圓。圓的直徑是6 米，長方形的面積是多少平方米?
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1 point
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