Предмет: Геометрия, автор: mayli

Сквер окружен прямоугольной оградой со смежными сторонами 160 м и
130 м. Каждое утро спортсмен пробегал вокруг сквера 10 раз. На какой
примерно расстоянии от ограждения проходит тропинка для бега, если
спортсмен пробегает около 6 км.

Ответы

Автор ответа: ЗельеварСнейп

так, спортсмен пробегал около 6000 метров за десять раз
1 раз вокруг сквера это 600 метров
600 метров - периметр
периметр сквера = 130+130+160+160=580
у нас 4 стороны, и от каждой есть отступ
(600 - 580)/4= 5
ответ: 5

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Қазақ тiлi, автор: jiminjikovlava

аа где ещё? там же 4 и тут не правильно

6 лет назад

Предмет: Литература, автор: filippdolgorukov

Чем отличается историческая песня от былины. И в чём сходства.

6 лет назад

Предмет: Английский язык, автор: pandagtr00741

Grammar Skills Check

1. That ____ a really good movie.

a) are b) am c) is

2. I ____ to music when she came in. (to listen)

a) was listening b) listened c) have been listening

3. They sometimes ____ TV in the evening.

a) are watching b) watches c) watch

4. The weather is fine. It ____ at the moment.

a) is not raining b) doesn’t rain c) is raining

5. I ____ in a small town in Italy.

a) have been born b) was born c) am born

6. She can’t speak English, but he _____ attending English lessons net month.

a) would have started b) will start c) will be starting

7. This ______ my apartment for the last several months (and I still live here).

a) was b) will be c) has been

8. I’m not really interested ____ this kind of music.

a) on b) of c) in

9. Every time you call on (навещаешь) me I ____ what I do.

a) dropped b) have dropped c) drop

10. What time _____ yesterday?

a) did the train leave b) have the train left c) left the train

11. His younger brother is _____ than yours.

a) older b) less old c) BOTH ARE OK

12. Was the character who _____ from the rich and gave to the poor.

a) stole b) was stealing c) steals

13. I _____ when you suddenly came yesterday.

a) was reading b) read c) am reading

14. Smoking is bad ____ you.

a) at b) for c) on

15. Your brother is really good _____ tennis.

a) with b) on c) at

16. I ______ to Paris, but I’d love to visit this city.

a) have never been b) was not c) have been

17. ____ the teacher explain this properly?

a) Did b) Was c) Had

18. ____ you spoken to him before he called you?

a) Had b) Did c) Were

19. My sister and I _____ twins.

a) are b) am c) is

20. This building was _____ than the one on the other side of the river.

a) more high b) higher c) BOTH ARE OK

6 лет назад

Предмет: Физика, автор: karinacot99

решите 6-ую задачу!!! срочно!! с решеним нормальным!!!

9 лет назад

Предмет: Математика, автор: angelina240

найти период функции y=3cos x + 4 sin x

9 лет назад