問題詳情
9. （ ）已知直角三角形中，兩股長的平方和等於斜邊長的平方。若一直角三角形的兩股長各為1公分及2公分，且斜邊長為a公分，則下列那一個選項是正確的？
(A)3.5＜a＜4.0
(B)3.0＜a＜3.5
(C)2.5＜a＜3.0
(D)2.0＜a＜2.5
(A)3.5＜a＜4.0
(B)3.0＜a＜3.5
(C)2.5＜a＜3.0
(D)2.0＜a＜2.5
參考答案
無參考答案
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