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After sawing a 20dm long cuboid into three equal sections, the surface area increases by 24 square decimeters. What is the volume of this section of wood?
24 ﹣ 2 ﹣ 3-1 = 6 square decimeters
volume
6x20 = 120 cubic decimeter
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How many square meters of surface area can be increased by sawing a timber of 20 DM long, 2 mm high and 3 dm wide into two cuboids
Three kinds: 20 * 2 * 2 = 40, 2 * 3 * 2 = 12, 20 * 3 = 60
60 cm & sup2 at most;
Cut a surface and add two areas. Each area is multiplied by two edges of the leather surface
How many square DM can be added to the surface area at most and at least when sawing the wood of 20 DM in length, 3 DM in width and 2 mm in height into two cuboids?
120 at most and 12 at least
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