Question

Начерти прямоугольник со сторонами 5см и 7см.найди его периметр различными способами.запиши соотвествующие выражения

Answer 1

Периметр прямоугольника 1)(5+7)*2=24 см
2)5+5+7+7=24

Answer 2

Drawing a Rectangle with Sides 5cm and 7cm

To draw a rectangle with sides measuring 5cm and 7cm, follow these steps:

1. Start with a blank sheet of paper or a drawing software. 2. Draw a straight line segment of length 5cm using a ruler or the drawing tool. 3. From one end of the line segment, draw another straight line segment perpendicular to the first one, measuring 7cm. 4. Connect the endpoints of the two line segments with two more straight line segments, forming a closed shape with four sides. 5. Make sure the angles between the adjacent sides are right angles (90 degrees).

The resulting shape is a rectangle with sides measuring 5cm and 7cm.

Finding the Perimeter of the Rectangle

The perimeter of a rectangle is the sum of all its side lengths. In this case, we have a rectangle with sides measuring 5cm and 7cm. Let's find its perimeter using different methods:

Method 1: Adding All Four Sides The perimeter of a rectangle can be found by adding all four sides together. In this case, the rectangle has two sides measuring 5cm and two sides measuring 7cm. Therefore, the perimeter can be calculated as follows:

Perimeter = 5cm + 5cm + 7cm + 7cm

Method 2: Doubling the Sum of the Lengths Another way to find the perimeter of a rectangle is by doubling the sum of its side lengths. In this case, the sum of the lengths is 5cm + 5cm + 7cm + 7cm. Doubling this sum gives us the perimeter:

Perimeter = 2 * (5cm + 5cm + 7cm + 7cm)

Method 3: Using the Formula The perimeter of a rectangle can also be calculated using a formula: P = 2 * (length + width). In this case, the length is 7cm and the width is 5cm. Plugging these values into the formula, we get:

Perimeter = 2 * (7cm + 5cm)

Now, let's write down the corresponding expressions for each method:

Method 1: Perimeter = 5cm + 5cm + 7cm + 7cm

Method 2: Perimeter = 2 * (5cm + 5cm + 7cm + 7cm)

Method 3: Perimeter = 2 * (7cm + 5cm)

Please note that the units (cm) are included in the expressions to indicate the measurement in centimeters.