Question

Сторона прямоугольника а-7 см,а в - на 2 см короче чему равен периметр прямоугольника?

Answer 1

1) 7 - 2 = 5 см
2) Р = (7 × 2)+(5 × 2) = 24см ^2 - Периметр прямоугольника

Answer 2

Perimeter of a Rectangle

To find the perimeter of a rectangle, we need to know the lengths of its sides. In this case, we are given that one side of the rectangle, side 'a', is 7 cm long, and the other side, side 'b', is 2 cm shorter than side 'a'.

To calculate the perimeter, we can use the formula: P = 2(a + b), where 'P' represents the perimeter, 'a' is the length of side 'a', and 'b' is the length of side 'b'.

Let's substitute the given values into the formula:

P = 2(7 + (7 - 2))

Simplifying the expression inside the parentheses:

P = 2(7 + 5)

P = 2(12)

P = 24

Therefore, the perimeter of the rectangle is 24 cm.

Summary:

The perimeter of the rectangle with side 'a' measuring 7 cm and side 'b' measuring 2 cm shorter than side 'a' is equal to 24 cm.