A rectangular piece of paper is 60 cm long. After cutting off the largest square, a small rectangle is left. What is the perimeter of this small rectangle?

Small rectangle length + width = 60, perimeter = 120 cm

A 60 cm long rectangular paper, cut out the largest square, leaving a small rectangle, what is the perimeter of this small rectangle?
We only know that the rectangle is long.

The perimeter of the small rectangle is 120

A piece of rectangular paper is 10 cm long and 6 cm wide. After cutting a square (as shown in the figure), what is the circumference of the remaining figure? （　　）
A. 32 cm B. 24 cm C. 20 cm

(10-6 + 6) × 2, = 10 × 2, = 20 (CM); answer: the perimeter of the remaining figure is 20 cm

The square is evenly divided into four rectangles. The perimeter of each rectangle is 80. What is the area of the rectangle

Let the side length of a square be: a
If divided into rectangles:
L=2(a/4+a)=80
a=32
S=a/4*a=256.
If divided into squares:
L=2(a/2+a/2)=80
a=40
S=a^2/4=400

A square is divided into six rectangles. The total perimeter of these rectangles is 80 meters. What is the area of the original square

The sum of the circumference of the small rectangle is 96cm
Perimeter of square = 96 / 2 = 48
Side length of square = 48 / 4 = 12cm
Square area = 12 * 12 = 144 square cm

The square is divided into four rectangles, each of which has a circumference of 20 cm

1. After being divided into four rectangles, the length of each small rectangle is four times of the width. The width is one part, the length is four parts, and the sum of length and width is (1 + 4) parts. Then we can find the quantity (width) of one part
2. Width: 20 ／ 2 ／ (1 + 4) = 2 (CM)
3. Length (side length of square): 2 × 4 = 8 (CM)
4. Square area: 8 × 4 = 32 (CM)

The length of a fuel tank is 120 cm, which is 80 cm longer than the width. What is its volume?
384000 cm3

I'm sorry, it's only length and width. It's only a plane. I can't calculate the volume. I don't know what the height is?
You just multiply the length by the width and then by the height to get the volume, in cubic centimeter

With a piece of 160cm long and 80cm wide rectangular iron sheet, weld a 20cm deep cuboid uncapped oil tank. What's its volume?
Write three solutions

096 cubic meters

Make a cuboid oil tank with iron sheet. The bottom of the oil tank is a square with side length of 6.5 decimeters and height of 7.2 decimeters. How much iron sheet does it need to make the oil tank?

Area = 2 * (L * W + W * H + L * h)
=2*(6.5*6.5+6.5*7.2+7.2*6.5)
=271.7 square decimeters
Note: this box has a cover, if not, it is 271.7-6.5 * 6.5 = 229.45m2

Use iron sheet to make a rectangular tank. The bottom of the tank is a square with a side length of 4 decimeters and a height of 1.2 meters. At least how many square meters of iron sheet should be used? If each liter of diesel weighs 0.82 kg, how many kg of diesel can this mailbox hold at most?

1.2 m = 12 decimeters (1) (4 × 4 + 4 × 12 + 4 × 12) × 2 = (16 + 48 + 48) × 2 = 112 × 2 = 224 (square decimeters); (2) 4 × 4 × 12 = 192 (cubic decimeters) = 192 (liters), 192 × 0.82 = 157.44 (kg); a: to make this tank, at least 224 square decimeters of iron should be used; the maximum capacity of this tank is 157.44 kg of diesel

A rectangular piece of paper is 60 cm long. After cutting off the largest square, a small rectangle is left. What is the perimeter of this small rectangle?