Предмет: Математика, автор: NLena

Периметр листа картона, имеющего форму квадрата, равен 28 дм. Сколько квадратных сантиметров содержит его площадь?


wwwm001ag95: удали мое решение оно неверное

Ответы

Автор ответа: annet1408
18
Периметр = 28. Ищем сторону: 28/4=7. Ищем площадь:S=7x7=49 см кв

NLena: периметр 28дм. нужно найти площадь в см.
annet1408: Я же нашла площадь - 49 см кв
wwwm001ag95: периметр равен 28 дециметрам, что равно 280 сантиметров, тогда одна сторона равна 70 см , а значит площадь квадрата 490 квадратных сантиметров
annet1408: Оу, извините. Протупила)
wwwm001ag95: я ошибся ! площадь равна 4900
Автор ответа: wwwm001ag95
6
28 дм = 280 см , отсюда сторона равна 70 см, значит площадь равна 70х70 , то есть 490 см в квадрате

wwwm001ag95: точнее 4900 ! я ошибся
NLena: А если не переводить в см. 28/4=7дм. 7*7=49дм.=490см.кв Так можно?
annet1408: Ой, уже и сама запуталась. Площадь = 49 дм в квадрате или 4900 см в квадрате
NLena: Я сама запуталась....
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Прочитайте текст. Используйте слова, написанные в скобках. Для образования слов Так,
чтобы они грамматически и лексически соответствовали содержанию текста.
Astrid Lindgren
Astrid Lindgren is a (14)_(Sweden) born author. She was born as Astrid Anna Emilia Ericsson
in 1907 in (15)_ (south) Sweden where she grew up on a farm. She spend her early
(16)__(child) with cows and discovering hidden forest paths. Astrid was the second of fi
children. During their childhood years, they were fond of storytelling; their parents taught them
how to use their (17)_(imagine) and (18)_(create) in the world of Literature. Her childhood
years were full of love and (19)__(laugh) which also came from her parents. Her books on
children are (20)__(international) known and loved. Pippi Longstocking, one of the
(21)_(favour) books, has been translated into 60 languages. This character was created after
the birth of her daughter, Karin. Her debut in (22) (write) was made at a time when women
were (23)__(most) involved with domestic work. Pippi jumped right into the world of boys and
(24)__(grow up) without any (25)__(permit). She was brave and (26)_(dare) and gave her
opinion on anything to anyone. Pippi would never just sit and wait for her prince
(27)__(charm) to come riding on his white horse. She had her own horse. Lindgren's humor
and love for (28)_(human) was (29)_(legend). She represented the Swedish spirit for the
rest of the world. Her books are full of loving relationships, liberation and (30)__(fond) for
nature. She died in 2002 at the age of 94, after a very (31)__(product) and (32)__(artist) life.