Question

Длина прямоугольника 12 см.,а ширина наь4 см., меньше.Найди периметр и площадь прямоугольника.Найди площадь квадрата,имеющего такой же периметр пожалуйста помогите задача с ответом

Answer 1

12-4=8 см - ширина прямоугольника 
12*4=48 см2 - площадь прямоугольника 
(12+8)*2 = 40 см - периметр прямоугольника 
квадрат с периметром 40 см, имеет все стороны по 10 см
10*10= 100 см2 - площадь квадрата

Answer 2

1)12-4=8(см)ширина
2)8+12+8+12=40(см)периметр
3)8•12=96(см кв.)площадь.

4)40:4=10(см)сторона квадрата
5)10•10=100(см кв.)площадь квадрата

Answer 3

Perimeter and Area of a Rectangle

To find the perimeter and area of a rectangle, we need to know its length and width. In this case, the length of the rectangle is 12 cm and the width is 4 cm.

The perimeter of a rectangle is the sum of all its sides. For a rectangle, the formula to calculate the perimeter is: P = 2 * (length + width).

Substituting the given values, we have: P = 2 * (12 cm + 4 cm).

To find the area of a rectangle, we multiply its length by its width. The formula for the area of a rectangle is: A = length * width.

Substituting the given values, we have: A = 12 cm * 4 cm.

Let's calculate the perimeter and area of the rectangle:

Perimeter of the rectangle: P = 2 * (12 cm + 4 cm) = 2 * 16 cm = 32 cm [[1]].

Area of the rectangle: A = 12 cm * 4 cm = 48 cm² [[2]].

Area of a Square with the Same Perimeter

Now, let's find the area of a square that has the same perimeter as the given rectangle.

The perimeter of a square is the sum of all its sides. Since all sides of a square are equal, we can calculate the perimeter by multiplying the length of one side by 4. Therefore, the formula for the perimeter of a square is: P = 4 * side length.

In this case, the perimeter of the rectangle is 32 cm. To find the side length of the square, we divide the perimeter by 4: side length = P / 4.

Substituting the given perimeter, we have: side length = 32 cm / 4 = 8 cm.

To find the area of a square, we multiply the length of one side by itself. The formula for the area of a square is: A = side length * side length.

Substituting the calculated side length, we have: A = 8 cm * 8 cm.

Let's calculate the area of the square:

Area of the square: A = 8 cm * 8 cm = 64 cm² [[3]].

Therefore, the area of the square with the same perimeter as the given rectangle is 64 cm².

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