Question

Начертите прямоугольник,длинна которого равен 30мм,а ширина 20 мм,вычисли периметр

Answer 1

Формула: P= 2(a+b) =>
P = 2(30+20) = 2(50) = 100 мм. = 10 см.
Ответ : 10 см.

Answer 2

Периметр=( 30мм+20мм)*2=100мм=10см.

Answer 3

Drawing a Rectangle

To draw a rectangle with a length of 30 mm and a width of 20 mm, follow these steps:

1. Start by drawing a straight line segment of 30 mm. This will be the length of the rectangle. 2. From one end of the line segment, draw a perpendicular line segment of 20 mm. This will be the width of the rectangle. 3. Connect the other ends of the two line segments to complete the rectangle.

The resulting rectangle will have a length of 30 mm and a width of 20 mm.

Calculating the Perimeter

To calculate the perimeter of the rectangle, you need to add up the lengths of all four sides. In this case, the rectangle has two sides with a length of 30 mm and two sides with a length of 20 mm.

The formula for calculating the perimeter of a rectangle is:

Perimeter = 2 * (Length + Width)

Substituting the values, we get:

Perimeter = 2 * (30 mm + 20 mm) = 2 * 50 mm = 100 mm

Therefore, the perimeter of the rectangle is 100 mm.

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