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1. 兩圓的半徑分別為3公分和5公分,則兩圓周長比的比值:兩圓面積比的比值=?(A)3:5 (B)5:3 (C)9:25 (D)25:9
問題詳情
1. 兩圓的半徑分別為3公分和5公分,則兩圓周長比的比值:兩圓面積比的比值=?
(A)3:5
(B)5:3
(C)9:25
(D)25:9
參考答案
答案:B
難度:
計算中
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書單:
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用户評論
【
jason
】評論
圓周長=直徑x3.14圓面積=半徑x半徑x3.14則兩圓周長比的比值=6/10 兩圓面積比的比值=9/25因此可以得到兩圓周長.....看完整詳解
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