Question

Начертите и вырежьте мерку- квадрат площадью 1 дм 2. Начертите прямоугольник шириной 30 см и длиной 40 см. выразите его площадь в дм в кв.

Answer 1

Ну вырежи,тебе по почте прислать или как?

Answer 2

Сторона мерки-квадрата 10 см
Прямоугольник площадь:1200 см2=12 дм2

Answer 3

Drawing a Square with an Area of 1 dm²

To draw a square with an area of 1 dm², we need to determine the length of each side of the square. Since the area of a square is equal to the side length squared, we can find the side length by taking the square root of the area.

The area of the square is given as 1 dm². To convert this to cm², we need to remember that 1 dm is equal to 10 cm. Therefore, 1 dm² is equal to (10 cm)², which is 100 cm².

Now, let's calculate the side length of the square:

Side length = √(Area) = √(100 cm²) = 10 cm

To convert the side length from cm to dm, we divide it by 10:

Side length in dm = 10 cm / 10 = 1 dm

So, the square with an area of 1 dm² has a side length of 1 dm.

Drawing a Rectangle with Dimensions 30 cm x 40 cm

To draw a rectangle with dimensions 30 cm x 40 cm, we simply need to draw a rectangle with a length of 40 cm and a width of 30 cm.

Converting the Rectangle's Area to dm²

To convert the area of the rectangle from cm² to dm², we need to divide it by 100. Since 1 dm is equal to 10 cm, 1 dm² is equal to (10 cm)², which is 100 cm².

The area of the rectangle is given as 30 cm x 40 cm = 1200 cm². To convert this to dm², we divide it by 100:

Area in dm² = 1200 cm² / 100 = 12 dm²

Therefore, the area of the rectangle with dimensions 30 cm x 40 cm is 12 dm².

I hope this helps! Let me know if you have any further questions.