如图,一个物体有3个棱长为2cm的正方体叠放在一起,求这个物体的表面积和体积?（就是三个立体正方形）速度
\u5728\u4e00\u4e2a\u68f1\u957f8\u5206\u7c73\u7684\u6b63\u65b9\u4f53\u4e0a\u653e\u4e00\u4e2a\u68f1\u957f\u4e3a6\u5398\u7c73\u7684\u5c0f\u6b63\u65b9\u4f53\uff0c\u6c42\u8fd9\u4e2a\u7acb\u4f53\u56fe\u5f62\u7684\u8868\u9762\u79ef\u548c\u4f53\u79ef\u3002\u8868\u9762\u79ef 8x8x6+6x6x4=384+144=538\u5e73\u65b9\u5206\u7c73
\u4f53\u79ef 8x8x8+6x6x6=512+216=728\u7acb\u65b9\u5206\u7c73
\u5148\u8bf4\u9762\u79ef\uff1a\u4e00\u5c42\uff1a\u9762\u79ef\u4e3a6\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b
\u4e8c\u5c42\uff1a\u9762\u79ef\u4e3a16\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+10=2*5\uff09
\u4e09\u5c42\uff1a\u9762\u79ef\u4e3a31\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+15=3*5\uff09
\u56db\u5c42\uff1a\u9762\u79ef\u4e3a51\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+20=4*5\uff09
\u4e94\u5c42\uff1a\u9762\u79ef\u4e3a76\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+25=5*5\uff09
\u2026\u2026
\u516b\u5c42\uff1a\u9762\u79ef\u4e3a181\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b
\u518d\u8bf4\u4f53\u79ef\uff1a\u4e00\u5c42\uff1a\u4f53\u79ef\u4e3a1\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b
\u4e8c\u5c42\uff1a\u4f53\u79ef\u4e3a4\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+3=2+1\uff09
\u4e09\u5c42\uff1a\u4f53\u79ef\u4e3a10\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+6=3+2+1\uff09
\u56db\u5c42\uff1a\u4f53\u79ef\u4e3a20\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+10=4+3+2+1\uff09
\u4e94\u5c42\uff1a\u4f53\u79ef\u4e3a35\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b\uff08\u6bd4\u4e0a\u4e00\u5c42+15=5+4+3+2+1\uff09
\u2026\u2026
\u516b\u5c42\uff1a\u4f53\u79ef\u4e3a120\uff08\u7acb\u65b9\u5398\u7c73\uff09\uff1b
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绛旓細璁涓鏉妫遍暱鍒嗗埆鏄2n,1n,3n锛屽垯2n*3n*1n=25 n^3=25/6 n^6=625/36 n^2=5/6*涓夋鏍瑰彿30 鍒欒〃闈㈢Н鏄細2锛2n*1n+2n*3n+1n*3n锛=22n^2=50/3*涓夋鏍瑰彿30=57.0cm²绛旓細琛ㄩ潰绉槸57.0cm²
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