Mathematics
Junior High
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5. 有一個正四面體,邊長為8公分,則下列敘述何者錯誤?
(A)表面積為64√3 平方公分
(B)底面積為 8√3 平方公分
12
(C)邊長總和為48 公分
(D)側面三角形的高為4√3公分
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