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The shape of the packing box of a refrigerator is a cuboid without bottom surface, which is 14 decimeters long and 6 decimeters wide. It takes at least more time to make the packing box Less square decimeter cardboard?
14×6＋﹙14×5＋6×5﹚×2
＝84＋﹙70＋30﹚×2
＝84＋200
= 284 square decimeters
The packing shape of a refrigerator is a rectangle without bottom. How many square decimeters does it take to make this packing box?
14×6＋﹙14×5＋6×5﹚×2
＝84＋﹙70＋30﹚×2
＝84＋200
= 284 square decimeters
A kind of rectangular cardboard box, the volume is 1.008 cubic meters, the width is 8dm, the height is 7dm. How many decimeters is the length of this kind of packing box
1.008 cubic meters = 1008 cubic decimeters
Length = 1008 ／ 8 ／ 7 = 18 decimeters
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