The perimeter of a square is 16 decimeters. If its side length is doubled, then its perimeter is 16 decimeters______ Decimeter, area is______ Square decimeter

The perimeter of a square is 16 decimeters. If its side length is doubled, then its perimeter is 16 decimeters______ Decimeter, area is______ Square decimeter

16 △ 4 = 4 (decimeter) 4 × 2 = 8 (decimeter) 8 × 4 = 32 (decimeter) 8 × 8 = 64 (square decimeter)

If the area sum of the two squares is 106cm2 and their perimeter difference is 16cm, the side lengths of the two squares are______ ．

Suppose the side length of the smaller square is xcm, then the side length of the other square is (4x + 16) △ 4 = (x + 4) cm. According to the meaning of the question, we can get: x2 + (x + 4) 2 = 106, we can get: X1 = 5, X2 = - 9 (not suitable for the question), then x + 5 = 9 (CM), so the answer is: 5cm, 9cm

If the area sum of the two squares is 106cm2 and their perimeter difference is 16cm, the side lengths of the two squares are______ ．

Suppose the side length of the smaller square is xcm, then the side length of the other square is (4x + 16) △ 4 = (x + 4) cm. According to the meaning of the question, we can get: x2 + (x + 4) 2 = 106, we can get: X1 = 5, X2 = - 9 (not suitable for the question), then x + 5 = 9 (CM), so the answer is: 5cm, 9cm

There are two squares, one big and the other small, whose perimeter differs by 20 cm and area by 55 square cm. What is the area of a small square?

55-5 × 5 = 30 (square centimeter); 30 ／ 2 ／ 5 = 3 (centimeter); 3 × 3 = 9 (square centimeter). Answer: the area of a small square is 9 square centimeter

There are two squares of different sizes. The difference of their perimeter is 12 cm and the difference of their area is 39 square cm. How about the perimeter and area of the two squares of different sizes?
What about the equations?

12/4=3
3*3=9
39-9=30
30/2=15
15/3=5
5+3=8
5*4=20
5*5=25
8*4=32
8*8=64

There is a small square in the big square. The difference of their perimeter is 12 cm and the difference of their area is 39 square cm
Urgent! Do not equation solution, to arithmetic, if there is a graph, it is best not to rotate, to direct, it is best to explain!

The circumference difference is 12 cm, the side length difference is 12 △ 4 = 3 cm,
Small square: (39-3 × 3) △ 2 △ 3 = 5cm,
Perimeter of small square: 5 × 4 = 20 cm,
Perimeter of large square: (5 + 3) × 4 = 32 cm
The sum of circumference: 32 + 20 = 52 cm

After a parallelogram is cut and complemented, it is a square. The perimeter of the square is 16 cm. The area of the parallelogram is______ Square centimeter

16 △ 4 = 4 (CM), 4 × 4 = 16 (cm 2). Answer: the area of parallelogram is 16 cm 2

A parallelogram, cut it into a square, the perimeter of the square is 20 cm, what is the area of the parallelogram?

A: the area of a parallelogram is 25 square centimeters

A parallelogram, cut it into a square, the perimeter of the square is 20 cm, what is the area of the parallelogram?

A: the area of a parallelogram is 25 square centimeters

The circumference of the bottom surface of the cylinder is 25.12m, and the side area is 251.2cm2

Bottom radius = 25.12 △ 3.14 △ 2 = 4m
Bottom area = 3.14 × 4 × 4 = 50.24 square meters
Height of cylinder = 251.2 △ 25.12 = 10m
Volume of cylinder = 50.24 × 10 = 502.4 cubic meters