Question

Ширина прямоугольника 25см.На сколько увеличится площадь этого прямоугольника, если его длину увеличитьс 30см до 35см?

Answer 1

25*30 =750 ( площадь прямоугольника)
25*35= 875 см ( площадь прямоугольника после увеличения длины до 35 см)
875-750=125 см ( на столько см увеличится площадь прямоугольника при увеличении длины)

Answer 2

Calculation of the Rectangle's Area

To calculate the increase in the area of a rectangle when its length is increased from 30 cm to 35 cm, we need to find the difference in the areas of the two rectangles.

The formula to calculate the area of a rectangle is:

Area = Length * Width

Given that the width of the rectangle is 25 cm, we can calculate the initial area of the rectangle as:

Initial Area = 30 cm * 25 cm

To find the new area after increasing the length to 35 cm, we can use the same formula:

New Area = 35 cm * 25 cm

To calculate the increase in area, we subtract the initial area from the new area:

Increase in Area = New Area - Initial Area

Let's calculate the values:

Initial Area = 30 cm * 25 cm = 750 cm^2 New Area = 35 cm * 25 cm = 875 cm^2 Increase in Area = 875 cm^2 - 750 cm^2 = 125 cm^2

Therefore, the area of the rectangle will increase by 125 square centimeters when the length is increased from 30 cm to 35 cm.