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tatsux2010
tatsux2010
28.07.2022 12:45 •  Геометрия

завтра сдавать! буду безумно . 1. объём прямой призмы, основание которой - правильный треугольник равен 48 корень из 3 см куб., её высота равна 4 см. найдите сторону основания призмы. 2.основанием прямоугольного параллелепипеда служит квадрат со стороной корень из 2 см. найдите объём этого параллелепипеда, если его диагональ образует с плоскостью угол 45 градусов. 3. апофема правильной треугольной пирамиды равна 10 см, а высота равна 8 см. найдите объём пирамиды. 4. апофема боковой грани правильной четырёхугольной пирамиды равна корень из 3 см, а угол между апофемой боковой грани и плоскостью основания 60 градусов. найдите объём пирамиды. 5. в основании пирамиды лежит прямоугольный треугольник с катетом 6 см и гипотенузой 12 см. найдите объём пирамиды, если все боковые рёбра наклонены к плоскости основания под углом 30 градусов. 6. осевое сечение конуса - прямоугольный треугольник, с катетом 6 см. найдите объём конуса.

👇
Ответ:
Devochkar
Devochkar
28.07.2022
1. V = S*H,  48sgrt3 = 4S,  S = 12sgrt3,  пусть а -- сторона основания призмы, тогда S =( a^2sgrt3)/4,  12sgrt3 = (a^2sgrt3)/4, a^2 = 48, a = 4sgrt3
4,6(56 оценок)
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Ответ:
snkashleva133
snkashleva133
28.07.2022
Essay on Sports
Hello, folks! Have you ever heard of this well-known saying: “A sound mind in a sound body"? I think the answer in most cases is “yes”. So, we’re discussing the importance of sports today.
Not so long ago sports was really important part of our day to day life. But with the rising popularity of television, the Internet and video games, sports and exercises are not so important anymore. There is a reason why we should do sports on daily basis. Going in for sports means to be energetic and healthy. While people who are not keen on it are often seen struggling with illnesses in their adulthood, such as diabetes, obesity etc; Moreover, it helps us not only to improve our body but our mind as well.
People who are good at sports also show a lifestyle of excellent quality. They are more active, can make better decisions and find the way out of stressful situations. Not encouraging children to take part in sports activities can make them lazy and peevish as they turn into grown-ups. Also, people who participate in sports competitions are more successful. It is a well-known fact that a man involved in sports activity from the very young age develops a very strong personality. He cultivates what is called the leadership.
4,5(12 оценок)
Ответ:
Anglichanin228
Anglichanin228
28.07.2022

Essay on Sports

Hello, folks! Have you ever heard of this well-known saying: “A sound mind in a sound body"? I think the answer in most cases is “yes”. So, we’re discussing the importance of sports today.

Not so long ago sports was really important part of our day to day life. But with the rising popularity of television, the Internet and video games, sports and exercises are not so important anymore. There is a reason why we should do sports on daily basis. Going in for sports means to be energetic and healthy. While people who are not keen on it are often seen struggling with illnesses in their adulthood, such as diabetes, obesity etc; Moreover, it helps us not only to improve our body but our mind as well.

People who are good at sports also show a lifestyle of excellent quality. They are more active, can make better decisions and find the way out of stressful situations. Not encouraging children to take part in sports activities can make them lazy and peevish as they turn into grown-ups. Also, people who participate in sports competitions are more successful. It is a well-known fact that a man involved in sports activity from the very young age develops a very strong personality. He cultivates what is called the leadership.

4,6(95 оценок)
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