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康軒數學六上圓面積

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19 questions

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  • 1. Multiple Choice
    10 seconds
    1 pt

    圓面積=?

    半徑×圓周率

    直徑×圓周率

    半徑×半徑×圓周率

    2×半徑

  • 2. Multiple Choice
    10 seconds
    1 pt

    半徑×半徑×圓周率=?

    圓周長

    圓面積

    直徑

    2×直徑

  • 3. Multiple Choice
    20 seconds
    1 pt

    有一個半徑為1公尺的圓,面積大約是多少平方公尺?

    314

    3.14

    31.4

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