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题一:小圆盖大圆桌子上有一个半径为1的大纸圆,另有许多直径为1的小纸圆.现在要用这些小的圆去盖住大圆,问:至少要用几个小圆?告诉你,两个绝对不够,四个还要露出一些,六个总有一点点盖不住,七个还得看你怎么盖法.题二:最多排多少个圆如图,在长为1、宽为3的长方形中,正好排列5个半径为l的圆,这5个等圆相邻两圆相外切,又各自与长方形的边相切于不同的位置.试求l的长.如果用同法排列n个圆,则l的长是多少?当l=100时,最多能排多少个圆?
Question 1: small round table Large round table has a radius of 1 large paper circle, and many other small diameter paper circle 1. Now use these small circles to cover the big circle, asked: at least with a few small Round tell you two absolutely not enough, four have exposed some, six always have a little cover, seven have to see how you cover method .Two: up to the number of rows as shown in the long 1, a width of 3 in the rectangle, just arranged five radius l of the circle, the five circle circumscribed two adjacent circles, but also with the rectangular edge tangent in different positions. If you use the same method arranged in n circles, then the length of l is how? When l = 100, the maximum number of rows can circle?