一物真逗,坐着也走,立着也走,卧着也走。

来源:百度知道 编辑:UC知道 时间:2024/09/27 23:26:25
有30个边长为1米的正方体,在地面上摆成一个塔形,然后喷红色油漆,底面和被盖住的地方是喷不上,这样有的小正方体只有一部分有红色,有的一面是红色,有的没有染上红色,求这些红色部分部分的面积总和。(要列算式)

You have it.
You read it.
There are some picture in it.
What is it?
(打一学习用具)

The teacher writes on my face.
My face is black.
I'm in the classroom.
What am i?
(打一学习用具)

You have it.
You read it.
There are some picture in it.
What is it?
(打一学习用具)

The teacher writes on my face.
My face is black.
I'm in the classroom.
What am i?
(打一学习用具)
黑板

computer
blackboard
第一个看起来有点烦,可能有简单的方法,可惜我不会~~

book and blackboard