Question

Ширина прямоугольника 4м и составляет 80% его длины .найдите площадь прямоугольника

Answer 1

4/80=х/100
80х=400
х=5

4*5=20 площадь

Answer 2

Calculating the Area of a Rectangle

To find the area of a rectangle, we can use the formula: Area = length * width.

Given that the width of the rectangle is 4m and it is 80% of its length, we can calculate the length and then find the area.

Calculating the Length of the Rectangle

The length of the rectangle can be calculated using the given information that the width is 80% of the length.

Let's denote the length as L and the width as W. We know that W = 4m and W = 0.8L.

Using the equation W = 0.8L, we can solve for L: ``` W = 0.8L 4 = 0.8L L = 4 / 0.8 L = 5 ``` So, the length of the rectangle is 5m.

Calculating the Area of the Rectangle

Now that we have the length and width of the rectangle, we can calculate its area using the formula: Area = length * width. ``` Area = 5m * 4m Area = 20 square meters ``` Therefore, the area of the rectangle is 20 square meters.