春节前夕,小明的爸爸要做一个棱长是9/20米的正方体灯笼框架,需要铁丝多少米?(接头处忽略不计)
问题描述:
春节前夕,小明的爸爸要做一个棱长是9/20米的正方体灯笼框架,需要铁丝多少米?(接头处忽略不计)
答
9/20÷12=3/80m正方体有12条棱额,错了用乘法9/20x12=27/5m
春节前夕,小明的爸爸要做一个棱长是9/20米的正方体灯笼框架,需要铁丝多少米?(接头处忽略不计)
9/20÷12=3/80m正方体有12条棱额,错了用乘法9/20x12=27/5m