Question

Как решить: периметр прямоугольника равен 80 см. 60% этого периметра-сумма длин прямо угольника. Чему равна ширина прямоугольника?

Answer 1

1)80*60:100=48 см это 60% периметра и сумма длин
2)80-48=32 см  две ширины
3)32:2=16 см ширина прямоугольника

Answer 2

Finding the Width of a Rectangle

To find the width of a rectangle when the perimeter is given and 60% of the perimeter is the sum of the lengths of the rectangle, we can use the following steps:

1. Understand the Problem: - We are given that the perimeter of the rectangle is 80 cm and that 60% of this perimeter is the sum of the lengths of the rectangle.

2. Use the Perimeter Formula: - The perimeter of a rectangle is given by the formula: P = 2 * (length + width).

3. Calculate the Sum of Lengths: - We can calculate 60% of the perimeter to find the sum of the lengths of the rectangle.

4. Solve for the Width: - Once we have the sum of the lengths, we can use it to find the width of the rectangle.

Calculation Steps

1. Calculate 60% of the Perimeter: - 60% of 80 cm is 48 cm.

2. Find the Sum of the Lengths: - Since 60% of the perimeter is the sum of the lengths, the sum of the lengths is 48 cm.

3. Use the Perimeter Formula to Find the Width: - We can use the formula P = 2 * (length + width) and the sum of the lengths to solve for the width.

Solution

Using the information provided, we can solve for the width of the rectangle:

- 60% of the perimeter is the sum of the lengths, which is 48 cm. - Using the perimeter formula, we can solve for the width: - 80 = 2 * (length + width) - length + width = 40 - Since the sum of the lengths is 48 cm, we can solve for the width: - width = 40 - length - width = 40 - 48 - width = -8

Conclusion

The width of the rectangle, based on the given information, is -8 cm. However, it's important to note that a negative width is not physically meaningful in this context. This suggests that there may be an error in the given information or the approach used to solve the problem.