A rectangle made up of two squares. Please use scissors to cut it into three pieces and put it into a square shape

A rectangle made up of two squares. Please use scissors to cut it into three pieces and put it into a square shape

Let ABCD be a square and cdef be an equal square,
Cut AC and CE into 3 pieces, then they will be square

If you want to use a square with an area of 1 square decimeter to make a rectangle with an area of 24 square decimeters, how can you make it? If you want to set lace around the rectangle, what is the shortest length of lace? (first list in the answer)

A rectangle made of 24 squares with an area of 1 square decimeter must still have an area of 24 square decimeters
The length and width of the side of the rectangle can be as follows:
24 decimeters and 1 decimeter
12 decimeters and 2 decimeters
8 decimeters and 3 decimeters
6 decimeters and 4 decimeters
Among them, the girth of 6 decimeters long and 4 decimeters wide is the shortest, and the length of lace is (6 + 4) × 2 = 20 decimeters

As shown in the figure, it's an 8x8 square piece of paper. Cut it into four pieces and reassemble them according to figure 2. Can these four pieces of paper just form a rectangle with a length of 13 and a width of 5

As shown in the figure, it is a piece of 8 x 8 square paper. Cut it into four pieces and reassemble them according to figure 2. The four pieces of paper can not be assembled into a rectangle with 13 in length and 5 in width
Because the areas are not equal

Given that the side length and the length of a diagonal of the diamond are both 4cm, the area of the diamond is_______ cm²

That is to calculate the area of two equilateral triangles whose side length is 4
2 * 4 root number 3
Given that the side length and the length of a diagonal line of the diamond are both 4cm, the area of the diamond is 3cm & # 178;

Do you remember how the formula for calculating the area of a circle was derived? In the figure below, the area of the circle is equal to that of the rectangle. If the length of the rectangle is 18.84cm, then the radius of the circle is______ cm．

The radius of the circle: 18.84 △ 3.14 = 6 (CM), answer: the radius of the circle is 6 cm

The circumference of a rectangle and a circle is equal. The length of a rectangle is 6.28 cm and the width is 4 cm. What is the area of a circle?
Note: the result of the answer is 50.24, please write the formula! 50

The radius of the circle is obtained as follows: (6.28 + 4) × 2 Π 2 = 10.28 / Π
Re calculate the area: Π× (10.28 / Π) ² = 10.28 & #178; / Π
So the answer is wrong!

The circumference of a rectangle and a circle are equal. It is known that the length of a rectangle is 10 cm, the width is 5.7 cm, and the area of a circle is 10 cm______ ．

C length = (a + b) × 2 = (10 + 5.7) × 2 = 15.7 × 2 = 31.4 (CM); r = C △ (2 π) = 31.4 ^ (2 × 3.14) = 31.4 ^ (6.28 = 5 (CM); s circle = π R2 = 3.14 × 52 = 3.14 × 25 = 78.5 (CM); answer: the area of circle is 78.5 square cm. So the answer is: 78.5 square cm

(1) The perimeter of square, rectangle and circle is equal, and the largest of them is (). Then the area ratio of square and circle is ()
(2) When the areas of two circles are equal, their circumference must be ()
(3) When the radius of a circle increases to three times of the original, its perimeter increases to () times of the original, and its area increases to () times of the original; when the radius ratio of the big and small circles is 3:2, the perimeter ratio of the two circles is (), and the area ratio of the two circles is ()
(4) In a square with a side length of 4cm, cut out the circle with the largest area. The area of this circle is ()

1. Yuanpai: 1
2. Equal
3、3 9 3：2 9：4
4. Four schools

It is known that the area of rectangle is equal to that of circle. The radius of circle is 3 cm, and the area of shadow is calculated

3.14 × 32 × 34 = 3.14 × 9 × 34 = 21.195 (square centimeter) a: the area of shadow is 21.195 square centimeter

The area of rectangle is equal to that of circle. The radius of circle is 3 cm

Do you have a picture?