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半徑=188.4÷2÷3.14=30分米=3米 高 =(150.72-2×3.14×3²;)÷18.84 =5米 很高興為您解答,祝你學習進步! 如果我的回答對你有幫助,請及時選為滿意答案,謝謝~~
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