After sawing a 1.2-meter-long cuboid wood into three sections, the surface area increases by 24 square centimeters. The original volume of this wood is ()

After sawing a 1.2-meter-long cuboid wood into three sections, the surface area increases by 24 square centimeters. The original volume of this wood is ()

After sawing into three sections, four surfaces are added, each with an area of 6 square centimeters. The original volume is 6 * 120 = 720 cubic centimeters

After sawing a 1.2-meter-long cuboid wood into three sections along its length, the surface area increases by 24 square centimeters, which is the same as the original volume of the wood

Saw into 3 sections
Add (3-1) × 2 = 4 bottom surfaces
Yes, the area of the bottom is 24 / 4 = 6 square centimeters
11.2m = 120cm
So the volume is 120 × 6 = 720 cubic centimeters

When a 2.4-meter-long cuboid wood is sawed into three sections, the surface area is increased by 24 square centimeters, and the volume of the original wood is () cubic decimeters

Saw three sections twice
So we added four bottom surfaces
So the bottom area = 24 △ 4 = 6 square centimeter = 0.06 square decimeter
2.4 m = 24 decimeters
24×0.06=1.44
A: the volume is 1.44 cubic decimeter

A 15 decimeter long cuboid wood is sawn into three sections on average, and its surface area is increased by 24 square centimeters. The volume of this wood is ()

15 decimeters = 150 cm
Base area of cuboid wood = 24 / 4 = 6 square cm
The volume of this wood is (6 * 150 = 900 cubic centimeter)