There are several squares and rectangles with areas of a ^ 2, B ^ 2 and ab. one square with area of a ^ 2 and four rectangles with area of ab There are several squares and rectangles with area of a ^ 2, B ^ 2 and ab. a square with area of a ^ 2, four rectangles with area of AB and several squares with area of B ^ 2 make a big square? A. 2 B, 4 C, 6 D, 8 Please explain why,

There are several squares and rectangles with areas of a ^ 2, B ^ 2 and ab. one square with area of a ^ 2 and four rectangles with area of ab There are several squares and rectangles with area of a ^ 2, B ^ 2 and ab. a square with area of a ^ 2, four rectangles with area of AB and several squares with area of B ^ 2 make a big square? A. 2 B, 4 C, 6 D, 8 Please explain why,

B. Four squares with an area of a ^ 2 and four rectangles with an area of AB form a cross. The square of a ^ 2 is placed in the middle. Four B ^ 2 squares are placed at the four corners of the cross, which makes it a big square

For a square, its adjacent sides are increased by one half and one fourth respectively. The area of the rectangle obtained from the innovation is larger than that of the original square
Supplement: how much more area of the new rectangle than that of the original square?
Note: please do not use equation solution,

Increase 50% + 25% + 12,5% = 87,5%

As shown in the right figure, on a square with a side length of 1, paste a square or rectangle with an area of 1 / 2, 1 / 4, 1 / 8, 1 / 16, and 1 / 2012 power of 2. The final area is ()

It can be listed as 1-2 / 1-4 / 1-8 / 1-16 / 1-32 / 1. - 2 to the power of 1 / 2 in 2012. First, add 1 / 2 to the power of 1 / 2 to get 1 / 2 of (1-1) + 2

The stroke order name of my character

Pai, horizontal, vertical hook, lift, oblique hook, Pai, dot. A total of 7 paintings

With the edge length of 1 cm cube block pile into a edge length of 1 decimeter cube, need to be improved______ Block, put these small cubes in a line, there are______ Cm

(1) 1 decimeter = 10 cm (10 × 10 × 10) / (1 × 1 × 1) = 1000 ／ 1 = 1000 (block) (2) 1000 × 1 = 1000 (CM) answer: you need 1000 such small cubes. The length of these small cubes in a row is 1000 cm. So the answer is: 1000

Use a small square block with the edge length of 1 cm to pile up a cube with the edge length of 1 decimeter. You need such a small square block () and arrange these small square blocks in a row. Its length is ()

1 decimeter = 10 cm
10/1=10
10 * 10 * 10 = 1000 pieces
1000 * 1 = 1000 (CM)

With the edge length of 1 cm cube block pile into a edge length of 1 decimeter cube, need to be improved______ Block, put these small cubes in a line, there are______ Cm

(1) 1 decimeter = 10 cm (10 × 10 × 10) / (1 × 1 × 1) = 1000 ／ 1 = 1000 (block) (2) 1000 × 1 = 1000 (CM) answer: you need 1000 such small cubes. The length of these small cubes in a row is 1000 cm. So the answer is: 1000

With the edge length of 1 cm cube block pile into a edge length of 1 decimeter cube, need to be improved______ Block, put these small cubes in a line, there are______ Cm

(1) 1 decimeter = 10 cm (10 × 10 × 10) / (1 × 1 × 1) = 1000 ／ 1 = 1000 (block) (2) 1000 × 1 = 1000 (CM) answer: you need 1000 such small cubes. The length of these small cubes in a row is 1000 cm. So the answer is: 1000

Stack 27 small cubes with edge length of 1cm into a large cube. How many square centimeters less is the surface area of this large cube than the sum of all the original small cubes?

The original 27 1 cm cube iron blocks are stacked into a large cube, and the volume sum is 27 cubic centimeters. Because 33 = 27, the edge length of the stacked large cube is 3cm, then: 1 × 1 × 6 × 27-3 × 3 × 6, = 162-54, = 108 (cubic centimeters). A: the surface product of the large cube is 108 square centimeters less than the sum of the original small cubes

There are two design schemes for Mingming family to lay floor tiles in the living room. ① scheme 1 uses 600 floor tiles. Please calculate the area of the living room. Scheme 1 costs 5 yuan each, 2 decimeters long and 2 decimeters wide. Scheme 2 costs 7 yuan each, 3 decimeters long and 2 decimeters wide. ② how many floor tiles do you need if scheme 2 is used? ③ which design scheme is more economical?

Area 2 * 2 * 600 = 2400
1 scheme cost 600 * 5 = 3000
2. The scheme cost 2400 divided by 6 and multiplied by 7 = 2800
2. The scheme saves money