【求助】求解题

yanhao

在一个边长为10米的正方形池塘，每隔2米种一棵树，一共可以种几棵。

gonglixing

大家是错的，我问过老师，正确答案是：１０/２*４-４＝１６（棵）才是对的！因为有４边，每边种１０/２＝５（棵），４边就是５*４＝２０（棵），由于４个角重复了四棵树，便要减掉４棵树，２０-４＝１６，所以正确答案是１０/２*４-４＝１６（棵），才是最对的！<img src="http://www.etjy.com/images/smiles/holdon.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/shame.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> ！

仄日庆

题目叙述不太准确，如果在池塘边上种树，应该是20棵，因为池塘是环形封闭的，所以是10 * 4 / 2 =20 (棵)

liuliu1078

好像是19颗吧！！

柯儿妈妈

40/2=20 有那么复杂吗

gonglixing

大家全错了!!!!!!!正确答案应该是16算式是(10/2*4-4=16)呵呵呵呵!!!<img src="http://www.etjy.com/images/smiles/embarrassed.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/confused.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/shame.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/holdon.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" />

gonglixing

5*5-4=21 正确答案是21棵,大家错了<img src="http://www.etjy.com/images/smiles/embarrassed.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/holdon.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> <img src="http://www.etjy.com/images/smiles/confused.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" /> !!!

tlih

yanhao+2006-01-11 13:41-->引用:yanhao @ 2006-01-11 13:41 老师说用4＊6＝24（棵）我觉的不对，我觉得应该种21棵，因为虽然有4个角，但每个角只能种棵，不知对不对。注：数字表示（棵）21201918171棵　* * *  * * *16（棵）2 **153 * *14 4 * *13 5 * *126 ** * * ** 78910 11

左上角的两棵重复了,1和21是一个位置,所以我觉得正确答案是20棵

635241

题目不太准确

nayj

yanhao+2006-01-10 13:08-->引用:yanhao @ 2006-01-10 13:08 在一个边长为10米的正方形池塘，每隔2米种一棵树，一共可以种几棵。

5*2+3*2=16 <img src="http://www.etjy.com/images/smiles/shine.gif" border="0" onclick="javascript:window.open(this.src);" alt= style="CURSOR: pointer" onload="javascript:if(this.width>screen.width-500)this.style.width=screen.width-500;" />