The surface area of a cuboid is 178dm, and its two sides are 3DM long squares. What is the volume of the cuboid?

The surface area of a cuboid is 178dm, and its two sides are 3DM long squares. What is the volume of the cuboid?

Let the length of a rectangle be X
The surface area of the rectangle is (3x + 3x + 3x3) x2 = 178
The solution is x = 15
The volume is 15x3x3 = 135dm

When the length of a cuboid is reduced by 3DM, it becomes a cube. At this time, its surface area is 150 square decimeters. What is the surface area of the original cuboid?

210

The surface area of a cuboid is 162 square decimeters, the bottom area is 30 square decimeters, and the perimeter of the bottom surface is 34 decimeters. What is the volume of a cuboid?

Top area = bottom area = 30
So side area = 162-30 * 2 = 102
So high = 102 / 34 = 3
So volume = bottom area * height = 30 * 3 = 90 cubic decimeter

The surface area of a cuboid is 162 square meters, the bottom area is 30 square meters, and the perimeter of the bottom surface is 34 decimeters. What is the volume of the cuboid

Upper and lower area: 30 * 2 = 60 (M2)
Area of four sides: 162-60 = 102 (M2) (expand the four sides to form a rectangle)
Height: 102 / 34 = 3 (m)
30 * 3 = 90 (M3)