A log is 2 meters long. If you cut it into three small logs, the surface area will increase by 40 square decimeters. What is the volume of this log______ Cubic decimeter

A log is 2 meters long. If you cut it into three small logs, the surface area will increase by 40 square decimeters. What is the volume of this log______ Cubic decimeter

After being cut into three sections, the area of the bottom of four cylinders is increased, so the area of the bottom of the cylinder is: 40 △ 4 = 10 (square decimeter), 2m = 20 decimeter. From v = sh, we can get: 10 × 20 = 200 (cubic decimeter). Answer: the original volume of this wood is 200 cubic decimeter. So the answer is: 200

After cutting a 4-meter-long cylinder into two equal sections, the surface area of the log increases by 4.8 square decimeters
How many cubic meters is it?

After truncation, two bottom surfaces are added, with a total of 4.8 square decimeters = 0.048 square meters
So volume = bottom area * length
0.048 / 2 * 4 = 0.096 (M3)

A cuboid log is 6 meters long. When it is formed into 4-end logs, the surface area increases by 24 square decimeters, and the volume of each log is () cubic decimeters

V = (24 / 6) * 60 = 240 cubic decimeter