幫幫手!!好急~一天呀!!(數學題)

[匿名]

2010-08-28 11:41 pm

幫我計下呢條數唔該!!快d~~

The dimensions of a rectangular card is 20cm x 16cm. Andy uses several pieces of rectangular cards to make a square.

(a) Find the least possible length of the sides of the square that can be made.

(b) How many pieces of rectangular cards are needed for making the square
in (a)?

唔該幫我答(要識同答案!!)thx!!!

更新1:

好似都唔明~~可唔可以用中文長細d講ok?

更新2:

係咪...80乘80除20乘16??

更新3:

明啦!!唔該晒你~~thx終於做到功課!!唉~T.T

回答 (1)

用戶2053

2010-08-28 11:43 pm

✔ 最佳答案

2a)20 = 4 * 516 = 4 * 4a)
The LCM of 20 and 16 is 4 * 4 * 5 = 80The least possible length of the sides of the square = 80cmb)(80 * 80) / (16 * 20)= 20 pieces of retangular cards are needed for making the square.

2010-08-28 16:08:03 補充：
80 * 80 是square 面積 ,

20 * 16 是 a card 面積

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