用一张长1.05m,宽2dm的长方形硬纸,剪成半径是2cm的园,最多能剪几个
\u628a\u4e00\u5f20\u957f1.05m\u3001\u5bbd2dm\u7684\u957f\u65b9\u5f62\u786c\u7eb8\u526a\u6210\u534a\u5f84\u662f2cm\u7684\u5706\uff0c\u6700\u591a\u80fd\u526a\u591a\u5c11\u4e2a\uff1f\u6c42\u89e32\u5206\u7c73=20\u5398\u7c73
1.05\u7c73=105\u5206\u7c73
20\u00f72=10\u4e2a
105\u00f72=52\u2026\u2026\u2026\u20261
\u6240\u4ee5\u6700\u591a\u51cf10\u00d752=520\u4e2a\u5c0f\u5706\u7247
\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff0c \u795d\u4f60\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e0d\u7406\u89e3\u8bf7\u8ffd\u95ee\uff0c\u7406\u89e3\u8bf7\u53ca\u65f6\u91c7\u7eb3\uff01(*^__^*)
1.05m=105cm
2dm=20cm
2*2=4cm
105/4=26\u3001\u3001\u3001\u3001\u3001\u30015
20/4=5
26*5=130\u4e2a
1.05m=105cm2dm=20cm2*2=4cm20\4=5个105\4=26个5*26=130个 8
1105cm=52*2+120cm=10*2最多能剪52*10=520个2圆直径=正方形边长正方形面积=(3.5*2)^2=7^2=49 dm^2^2:表示2次方
第二题…圆的直径就是正方形边长…
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