Question

ПЕРИМЕТР ПРЯМОУГОЛЬНИКА РАВЕН 20СМ , А ЕГО ДЛИНА 5СМ . НАЙДИ ШИРИНУ?

Answer 1

А=5см 
б=?см
Площадь=20 см 
закон площади (а+б)*2
20/5=4
и получилось б=4
(5+4)*2=20
Ну вот и с объяснением 

Answer 2

Perimeter of a Rectangle

To find the width of a rectangle when the perimeter is 20 cm and the length is 5 cm, we can use the formula for the perimeter of a rectangle, which is:

Perimeter = 2 * (Length + Width)

Let's substitute the given values into the formula:

20 = 2 * (5 + Width)

To solve for the width, we can rearrange the equation:

20 = 10 + 2 * Width

2 * Width = 20 - 10

2 * Width = 10

Width = 10 / 2

Width = 5 cm

Therefore, the width of the rectangle is 5 cm.