Question from the fourth grade of primary school A square vegetable plot with an area of 120 square

120 under the root number is about equal to , so it can be said that its side length is meters, and it can also be said that its side length is 120 (meters) under the root number.

The title is wrong, it should be a square vegetable plot with a circumference of 120 meters, find its side length?

120 4 = 30 meters.

Let the side length be x, then x*x=120 and x=2 will be solved to get x=2 root number 30

Teach it like this!!1*1=1,2*2=4...11*11=121 and tell him that the side length is between 10 and 11.

The fourth grade should not have learned to open the root number, it should be similar, with the multiplication of 1*1=1,2*2=4....11*11=121 is deduced step by step.

Is it possible? It should be the wrong question, the correct title is a square vegetable field, with a circumference of 120 meters, find its side length?

120 4 = 30 meters.

The root number is 120, which is 2 times the root number 30

120 square 11

The question may not be right, and there will be no such question in the fourth grade.

The question is wrong, and this requires the root number.

It's to find a square of 120, and there is one on the calculator, so I won't ask my parents.

Is it wrong? Is there a root style in elementary school? Isn't it the first year of junior high school?

Will the question be copied wrong?,I don't ask for a root number in elementary school.。

50 50 = 2500 (square meters) = hectares).

A: Its area is hectares.

72 square meters.

Analysis: Set the length to a and the width to b

a+2b=24

AB is the largest when A=2B.

a=12，b=6

ab = 72 square meters.

Expansion and Defeat Spike Exhibition Information:Nature of the rectangle:

1. The two orange angles are equal;

2. Two diagonals are bisected by each other;

3. The two groups of opposite sides are parallel to each other;

4. The two groups of opposite sides are equal;

5. The four corners of the orange are all right angles.

Formula for perimeter:

1. Circle: C = D = 2 R (D is the diameter, R is the radius, ) 2. The perimeter of the triangle C = A + B + C (ABC is the three sides of the triangle) 3. Quadrilateral: C = A + B + C + D (ABCD is the side length of the quadrilateral) 4

Rectangle: c=2(a+b) (a is long, b is wide) 5, square: c=4a (a is the side length of the square).

6. Polygon: c = sum of all side lengths.

The length of the four sides of the square is 24 meters, then by the area formula s=a 2, so the area is 24 times 24, which is equal to 576

12 12 = 144 (square meters), A: Its area is 144 square meters of lap bend empty pai rice

So the answer is: 144 rounds of blindness.

Hello, I am happy to answer your questions, the specific answers are as follows: the original square area s1 = 100 100 = 10000 square meters, the side length of the ruler 400 meters, after the large square area s2 = 500 500 = 250000 square meters, s2-s1 = 250000-10000 = 240000 square meters, then the vegetable area increased by 240000 square meters, I hope to help you, if it helps you, please give a compliment, thank you. (・

The square area is 400 square meters, and the side length is 20 meters.

The side length is reduced to one-tenth of the original 2 meters, so the area is 4 square meters.

It is one percent of the original area.

400 (1 10) (1 10) = 4 (square meters), the area becomes 4 square meters.

40 100 100 400000 square centimeters.

400,000 square centimeters 40 square meters.

The actual size of this vegetable plot is 40 square meters.

Analysis: If the side of a square vegetable plot is 12 meters long, then its area is the area of a square. The calculation of the area of the square can be done as long as the side length is known, according to the formula: the area of the square = the side length * the side length, this problem can be solved.

Problem solving process: the area of the square = side length * side length = 12 * 12 = 144 square meters.

A: Its area is 144 square meters.