Предмет: Геометрия, автор: Настюша1993

Най­ди­те диа­го­наль пря­мо­уголь­ни­ка, если его пе­ри­метр равен 28, а пе­ри­метр од­но­го из тре­уголь­ни­ков, на ко­то­рые диа­го­наль раз­де­ли­ла пря­мо­уголь­ник, равен 24.

Ответы

Автор ответа: ТатМих
0
Pпр=(a+b)*2=28 ⇒(a+b)=14
Pтр=(a+b+c)=24 ⇒c=24-(a+b)=24-14=10(cм)

c-диагональ
а,b-стороны прямоугольника

Ответ:10см.


Похожие вопросы
Предмет: Английский язык, автор: iamannas79
There are plenty of tomatoes in the fridge. You (mustn’t/needn’t/may not/should not) buy any. 2. It’s a hospital. You (mustn’t/needn’t/may not/don’t have to) smoke. 3. He had been working for more than 11 hours. He (must/need/had better/mustn’t) be tired after such hard work. He (should/may/must/had better) prefer to get some rest. 4. I (might/could/must/can) speak Arabic fluently when I was a child and we lived in Morocco. But after we moved back to Canada, I had very little exposure to the language and forgot almost everything I knew as a child. Now, I (may/can/must/need) just say a few things in the language. 5. The teacher said we (must/can/should/needn’t) read this book for our own pleasure as it is optional. But we (need/could/mustn’t/needn’t) read it if we don’t want to. 6. (Can/May/Need/Must) you stand on your head for more than a minute? – No, I (can’t/needn’t/may not) . 7. If you want to learn to speak German fluently, you (need/have to/could/mustn’t) to work hard. 8. Take an umbrella. It (should/need/might/has to) rain later. 9. You (need/needn’t/may not/shouldn’t) leave small objects lying around . Such objects (may/must/need/may not) be swallowed by children. 10. People (may not/needn’t/couldn’t/don’t have to) walk on grass. 11. Drivers (must/can/could/might) stop when the traffic lights are red. 12. (Will/Can/Must/May) I ask a question? – Yes, of course. 13. You (couldn’t/needn’t/mustn’t/may not) take your umbrella. It is not raining. 14. (Should/May/Need/Can) you speak Polssh? – No, I (can’t/mustn’t/might not/don’t have
Предмет: Химия, автор: ferryperry