一盒饼干长20厘米,宽15厘米,高30厘米,现在要在它的四周贴上商标纸,如果商标纸的接头处是4厘米,这张商标纸的面积是多少平方厘米?
人气:182 ℃ 时间:2020-04-05 11:03:12
解答
(20×30+15×30)×2+30×4,
=(600+450)×2+120,
=2100+120,
=2220(平方厘米);
答:这张商标纸的面积是2220平方厘米.
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