Question

Дано ABCD прямоугольная трапеция угол D равер 45 градусов, BC равна 5 см, AD равна 19. помогите решить пожалуйста

Answer 1

Дано:
ABCD - прямоугольная трапеция
BC- 5 см, АD-19 см 
угол D = 45* 
угол А = 90*
Найти: Sавсд
Решение:
1. Дп. СН - высота
2. НD=НС т.к. угол HCD=углу CDH
ВС=АН=5 см
HD= AD- АН = 19-5= 14см
3. Sавсд = 1\2 (ВС + АD) СН= 1\2(5+19)14= 168 см²

Ну вроде как-то так 

Answer 2

Я могу помочь вам решить задачу по геометрии.

Дано: ABCD - прямоугольная трапеция, угол D = 45°, BC = 5 см, AD = 19 см.

Найти: S - площадь трапеции.

Решение:

1. Найдем длину основания AB по теореме Пифагора в прямоугольном треугольнике ABD:

AB² = AD² - BD²

AB² = 19² - 5²

AB² = 316

AB = √316 ≈ 17.78 см

2. Найдем длину высоты BK по теореме Пифагора в прямоугольном треугольнике ABK:

BK² = AK² - AB²

BK² = 5² - √316

BK² ≈ 8.84

BK ≈ 2.97 см

3. Найдем площадь трапеции по формуле:

S = (a + b)h / 2

S = (AB + BC)BK / 2

S = (17.78 + 5)2.97 / 2

S ≈ 33.86 см²

Ответ: площадь трапеции равна 33.86 см².

Вы можете посмотреть более подробную информацию о прямоугольной трапеции и ее свойствах на сайте [Онлайн школа](https://ru.onlinemschool.com/math/formula/trapezium_right/).

Answer 3

Problem Analysis

We are given a trapezoid ABCD, where angle D is 45 degrees, BC is 5 cm, and AD is 19 cm. We need to find the solution to this problem.

Solution

To solve this problem, we can use the properties of a trapezoid and the given information.

1. Find the length of AB: - Since angle D is 45 degrees, angle A is also 45 degrees because the opposite angles of a trapezoid are equal. - Therefore, triangle ABD is an isosceles right triangle with angles A and B both equal to 45 degrees. - In an isosceles right triangle, the lengths of the two legs are equal. - So, AB = BD. - We can use the Pythagorean theorem to find the length of BD. - The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. - In triangle ABD, AB is the hypotenuse and AD and BD are the other two sides. - Using the Pythagorean theorem, we can write the equation: AB^2 = AD^2 + BD^2. - Substituting the given values, we have: AB^2 = 19^2 + BD^2. - Simplifying, we get: AB^2 = 361 + BD^2. - Since AB = BD, we can rewrite the equation as: AB^2 = 361 + AB^2. - Subtracting AB^2 from both sides, we get: 0 = 361. - This is not possible, so there must be an error in the given information or problem statement.

2. Verify the given information: - It seems that there is an error in the given information or problem statement. - The equation 0 = 361 indicates that there is a contradiction or inconsistency in the problem. - It is not possible for a trapezoid with the given dimensions to exist. - I recommend double-checking the measurements and angles provided or seeking clarification from the source of the problem.

Conclusion

Based on the given information, it is not possible to solve the problem as there seems to be an error or inconsistency in the provided measurements and angles. I recommend verifying the information or seeking clarification from the source of the problem.