Предмет: Математика, автор: кристина875

вычислите площадь прямоугольного треуголника если его гипотенуза на 8 см длиннее катета , другой катет равен 20 см

Ответы

Автор ответа: natali15medved

Пусть катет х см , тогда гипотенуза (х+8) см.
По теореме Пифагора 20²+х²=(х+8)²
400+х²=х²+16х+64
16х=400-64
16х=336
х=336/16=21
S=(20*21)/2=210 см²
Ответ; 210 см²

Автор ответа: кристина875

спасибо большое

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: dimakonopla

Сократить текст до 5-6 предложений,передать в них главную суть текста
A programming language provides a structured mechanism for defining pieces of data, and the operations of transformations that may be carried out automatically on that data. A programmer uses the abstractions present in the language to represent the concepts involved in a computation. These concepts are represented as a collection of the simplest elements available (called primitives).
Programming languages differ from most other forms of human expression in that they require a greater degree of precision and completeness. When using a natural language to communicate with other people, human authors and speakers can be ambiguous and make small errors, and still expect their intent to be understood. However, figuratively speaking, computers do exactly what they are told to do, and cannot “understand” what code the programmer intended to write. The combination of the language definition, a program, and the program’s inputs must fully specify the external behavior that occurs when the program is executed, within the domain of control of that program.
Programs for a computer might be executed without human interaction, or a user might type commands in an interactive session of an interpreter. In this case the “commands” are simply programs, whose execution is chained together. When a language is used to give commands to a software application it is called a scripting language.
Many languages have been designed from scratch, altered to meet new needs, combined with other languages, and eventually fallen into disuse. Although there have been attempts to design one “universal” computer language that serves all purposes, all of them have failed to be generally accepted as filling this role. The need for diverse computer languages arises from the diversity of contexts in which languages are used.

6 лет назад

Предмет: Математика, автор: VeratheCat

Мы считали дырки в сыре - 3+2 ровно?

6 лет назад

Предмет: Математика, автор: nurtilekkozhonov

Решите уравненте
Срочно , есть фото , простое уравнение

6 лет назад

Предмет: Химия, автор: amirov793

Сколько элементов известно в природе? Сколько элементов получено искусственным путем? Можно ли увеличить число новых элементов?

9 лет назад

Предмет: Геометрия, автор: Аноним

пожалуйста помните.7 класс.геометрия.надо номер 33 и 34 .
пожалуйста помогите.
срочно нужно.

9 лет назад