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1題體積的應用題

May 8th 2013, 15:58

正方形邊長4公分.....周長16公分
64-2*16=32(剩下4個邊)
32/4=8(每邊8公分)

此長方體是由
2個邊長4公分的正方形，
4個長8公分寬4公分的長方形組成

4*4*2=32
8*4*4=128
128+32=160(表面積)
選④160

請問你答案是否有打錯??

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