Question

Периметр прямоугольника равен 56см.Одна из сторон равна 4см.Чему равна площадь этого прямоугольника?

Answer 1

P= 56 см
1 сторона- 4 см
2 сторона- ? см
S=?
P=(a+b)·2
S=a·b
a=P:2-b
1) 56:2 -4= 28 -4=24 (см)- 2 сторона
2) 24·4= 96 (см²)- площадь прямоугольника
Ответ: 96 см².

Answer 2

4*2=8
56-8=48
48:2=24
8*24=192

Answer 3

Calculating the Area of a Rectangle

To find the area of a rectangle, we can use the formula: Area = length * width. In this case, the perimeter of the rectangle is given as 56 cm, and one of the sides is 4 cm. We can use this information to calculate the area.

Calculation

The perimeter of a rectangle can be expressed as: Perimeter = 2 * (length + width). Given that the perimeter is 56 cm and one of the sides is 4 cm, we can calculate the length of the rectangle.

Using the formula for the perimeter, we can solve for the length: - 56 = 2 * (4 + length) - 56 = 8 + 2 * length - 2 * length = 56 - 8 - 2 * length = 48 - length = 48 / 2 - length = 24

Now that we have the length and width of the rectangle, we can calculate the area: - Area = length * width - Area = 24 * 4 - Area = 96 cm²

So, the area of the rectangle is 96 square centimeters. This calculation is based on the given information and the formulas for calculating the perimeter and area of a rectangle. [[1 #]]

I hope this helps! If you have any other questions, feel free to ask.