Question

ПЕРИМЕТР ПРЯМОУГОЛЬНИКА ABCD РАВЕН 40 СМ.ДЛИНА ПРЯМОУГОЛЬНИКА 12СМ.НАЙДИ ШИРИНУ ПРЯМОУГОЛЬНИКА.

Answer 1

Ширина прямоугольника равна 8 см

Answer 2

Perimeter of Rectangle ABCD

To find the width of rectangle ABCD, we need to use the formula for the perimeter of a rectangle. The perimeter of a rectangle is equal to the sum of all its sides.

Let's denote the length of the rectangle as L and the width as W.

The formula for the perimeter of a rectangle is:

P = 2(L + W)

We are given that the perimeter of rectangle ABCD is 40 cm and the length is 12 cm.

Substituting the given values into the formula, we have:

40 = 2(12 + W)

To find the width, we can solve this equation for W.

Solving for the Width

Let's solve the equation step by step:

1. Distribute the 2 on the right side of the equation:

40 = 24 + 2W

2. Subtract 24 from both sides of the equation:

40 - 24 = 2W

Simplifying, we get:

16 = 2W

3. Divide both sides of the equation by 2:

16/2 = W

Simplifying further, we get:

8 = W

Therefore, the width of rectangle ABCD is 8 cm.

Summary

The width of rectangle ABCD is 8 cm. This is determined by using the formula for the perimeter of a rectangle and solving the equation based on the given information.