Question

Периметр квадрата со стороной х см равен 28 см. Найди его площадь.

Answer 1

1) 28:4=7 (см)-1ст.
2) 7*7=49 (см( в квадрате))

Answer 2

Perimeter and Area of a Square

To find the area of a square, we need to know the length of its sides. In this case, we are given that the perimeter of a square with a side length of x cm is 28 cm. We can use this information to find the area of the square.

Finding the Side Length

The perimeter of a square is given by the formula P = 4s, where P is the perimeter and s is the side length. In this case, we are given that the perimeter is 28 cm. Therefore, we can set up the equation as follows:

28 = 4x

To find the value of x, we divide both sides of the equation by 4:

28/4 = x

x = 7 cm

Therefore, the side length of the square is 7 cm.

Finding the Area

The area of a square is given by the formula A = s^2, where A is the area and s is the side length. In this case, the side length is 7 cm. Therefore, we can calculate the area as follows:

A = 7^2

A = 49 cm^2

Therefore, the area of the square is 49 cm^2.