The circumference of a rectangular vegetable field is 320.4 meters, and the length is twice the width. How many meters are the length and width? You have to list the formulas

The circumference of a rectangular vegetable field is 320.4 meters, and the length is twice the width. How many meters are the length and width? You have to list the formulas

Length + width = 320.4/2 length = 2 width = 320.4/6 = 53.4 length = 106.8

A rectangular vegetable field, the perimeter is 84 meters, the ratio of length and width is 5:2?

84 △ 2 = 42 (m)
42÷（5+2）=6
Length: 6 × 5 = 30 (m)
Width: 42-30 = 12 (m) or 2 × 6 = 12 (m)

The perimeter of a rectangular vegetable field is 37.4 meters, and the length is 2.4 times of the width. What is the length and width of this rectangular vegetable field

If the width is x m, the length is 2.4x M
2(x+2.4x)=37.4
x=5.5
Length: 2.4 × 5.5 = 13.2
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There is a cuboid iron block with a bottom area of 32 square centimeters and a height of 4 centimeters. It is forged into a cuboid with a square section and a side length of 4%
M (no loss in forging). Find the height of the cuboid in cm
It's high!

Height 32x4 ÷ (4x4) = 8cm
If other problems are added,

Cut a cube with a plane to get the section of a cuboid. The volume of one cuboid cut is one third of that of the cuboid,
What is the surface area of a cube
It's best to use the primary school method

"Excellent Zhao Kai":
Let the edge length of the cube be n and the surface area be 6N & sup2;
Then the thickness of the cut rectangle is n / 3,
Its surface area is 2n & sup2; + 4N × n / 3 = 2n & sup2; + 4N & sup2 / 3 = 10N & sup2 / 3
The surface area of the truncated part is 10N & sup2 of the surface area of the cube; = 10 / 18 = 5 / 9
A: the surface area is 5 / 9 of the original cube
Good luck and goodbye

What's the shape of a cube cut by a plane?

Cut vertically from top to bottom, it's a square
It's a rectangle,
Cut from a corner is a triangle
Cut from two corners is a diamond
There is also a trapezoid
And Pentagon

It is impossible to cut a cube with a plane
A. Triangle B. quadrilateral C. Pentagon D. hexagon E. heptagon F. Octagon

E F
It's hexagonal at most
It's at least three sided

If you use a plane to cut a cube, how many facets can the cross section be?
A3 B rectangle C6 D7

D. Heptagonal
If you cut an angle, it's a triangle
Cut two corners, it's a rectangle
If you cut three corners, you'll get a hexagon,
Cut 4 corners, or a rectangle

5. To cut a cube with a plane, the cut figure (section) cannot be ()
Triangle B. Pentagon C. hexagon D. heptagon

D. Heptagonal

If a cube is cut by a plane, its cross section shape cannot be ()
(1 to 7 sides)

Since it's a section, of course, if it's a face, it's at least a triangle (triangle), there's no one side, two sides
Cut an angle is a triangle, cut to all the height is a quadrilateral
Cut to two heights, three top edges are pentagons
Cut to two heights, two top edges, two bottom edges is a hexagon
You can't cut out a heptagon