Question

ширина прямоугольника равна 4 см а длина 5 см найди периметр и площадь фигуры сравни способы нахождения его периметра и площади в чем сходство в чем различия

Answer 1

Периметр=2*(длина+ширина)=2*(5+4)=18 см;

Площадь=длина*ширина=5*4=20 см.

Ответ: Периметр=18см; площадь=20см

Answer 2

Finding the Perimeter and Area of a Rectangle

To find the perimeter and area of a rectangle, we need to know the width and length of the rectangle. In this case, the width is given as 4 cm and the length is given as 5 cm.

Perimeter is the distance around the outside of a shape. For a rectangle, the perimeter is calculated by adding up all the sides. In this case, we have two sides of length 4 cm and two sides of length 5 cm. Therefore, the perimeter of the rectangle is:

Perimeter = 2 * (Length + Width) = 2 * (5 cm + 4 cm) = 2 * 9 cm = 18 cm.

Area is the measure of the space inside a shape. For a rectangle, the area is calculated by multiplying the length and width. In this case, the area of the rectangle is:

Area = Length * Width = 5 cm * 4 cm = 20 cm^2.

Comparison of Methods for Finding Perimeter and Area

There are different methods for finding the perimeter and area of a rectangle. Let's compare two common methods:

1. Using Side Lengths: This method involves directly using the given side lengths to calculate the perimeter and area. In this case, we used the lengths of 4 cm and 5 cm to find the perimeter and area.

2. Using Formulas: Another method involves using specific formulas for finding the perimeter and area of a rectangle. The formulas are as follows: - Perimeter = 2 * (Length + Width) - Area = Length * Width

Both methods yield the same results, as shown above. The choice of method depends on the given information and personal preference.

Similarities and Differences

The similarities between the two methods are: - Both methods provide accurate results for finding the perimeter and area of a rectangle. - Both methods involve using the length and width of the rectangle.

The differences between the two methods are: - The first method directly uses the given side lengths, while the second method uses specific formulas. - The first method may be more intuitive for simple cases, while the second method is more general and can be applied to rectangles with any given side lengths.

In summary, both methods can be used to find the perimeter and area of a rectangle. The choice of method depends on the given information and personal preference.