The volume of a cone is 24 cubic centimeters, its height is 4 centimeters, and its bottom area is 18 square meters______ (judge right or wrong)

The volume of a cone is 24 cubic centimeters, its height is 4 centimeters, and its bottom area is 18 square meters______ (judge right or wrong)

A: the bottom area of this cone is 18 square centimeters

If the height of a cuboid is reduced by 5 cm, it will become a cube. At this time, the surface area will be reduced by 120 square cm. How many cubic centimeters is the volume of the cuboid

The height is reduced by 5cm, and four 5cm high sides are reduced
1 side = 120 △ 4 = 30
So the side length = 30 △ 5 = 6
Height = 6 + 5 = 11
The original cuboid volume = 6 × 6 × 11 = 396 cubic centimeters

A cuboid wood block, cut from the top of the cuboid 5 cm high, the rest is a cube, the surface area reduced by 120 square centimeters______ Cubic centimeter

The original cuboid's length and width are: 120 △ 4 △ 5, = 30 △ 5, = 6 (CM); the original cuboid's height is: 6 + 5 = 11 (CM); the original cuboid's volume is: 6 × 6 × 11 = 396 (cm3); answer: the original cuboid's volume is 396 cm3. So the answer is: 396