a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ..a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ,then then left for 120° ,then walks straight along for
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a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ..a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ,then then left for 120° ,then walks straight along for
a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ..
a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ,then then left for 120° ,then walks straight along for 3meters and turn left for 120°again...
how far away is he from a when for 2005 meters?
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a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ..a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ,then then left for 120° ,then walks straight along for
一个人从一片草地上的A点开始走,他先向正东直走3米,然后左转120度,再直走3米,再左转120度……
请问,当他走了2005米时,他离A点有多远?
这是奥数题吗
从题中得知 此人在走一个等边三角形 假设他走了2007米 2007/3= 669 669/3=223(个三角形) 也就是如果走2007米的话 正好回到出发点A 2007-2005=2 所以他走完2005米后 离A点的距离是2米