At least how many cuboids(長方體) of dimensions(大小) 3cm 乘 4cm 乘
6cm should be used to from a cube(正方體)?
答案: 24
中文點解?橫式係咩? 點計?
英數高手請幫幫! (睇下都好)
2008-08-27 9:03 pm
回答 (2)
2008-08-27 9:21 pm
✔ 最佳答案
At least how many cuboids(長方體) of dimensions(大小) 3cm 乘 4cm 乘 6cm should be used to from a cube(正方體)?
意思是
最少要用多少個邊長 3cm x 4cm x 6cm 的長方體, 才能砌出一個正方體？
首先要求出 3, 4, 6 的 LCM (最小公倍數)
即是 12
所以正方體的邊長最少要 12 cm
若果邊長是12cm
我們就要用上長方體
(12/3) x (12/4) x (12/6)
4 x 3 x 2
= 24個
2008-08-27 9:30 pm
最少用多少個 3X4X6CM的長方體，才可組成一個正方體?
先找3 & 4 & 6的LCM, 便是正方體的最少邊長.再計每邊要用多少個．
．
LCM OF 3 , 4 , 6 IS 12.
HENCE, THE MINIMUM SIDES OF CUBE SHOULD BE 12CM.
THEREFORE, THE NO. OF CUBOIDS (3X4X6CM)TO FROM A CUBE IS
12/ 3 X 12/4 X 12/6 = 4X3X2=24
先找3 & 4 & 6的LCM, 便是正方體的最少邊長.再計每邊要用多少個．
．
LCM OF 3 , 4 , 6 IS 12.
HENCE, THE MINIMUM SIDES OF CUBE SHOULD BE 12CM.
THEREFORE, THE NO. OF CUBOIDS (3X4X6CM)TO FROM A CUBE IS
12/ 3 X 12/4 X 12/6 = 4X3X2=24
收錄日期: 2021-04-18 17:00:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080827000051KK01147