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Исследовательская задача.Квадрат и прямоугольник имеют одинаковые периметры. Площадь какой фигуры больше? Проведите исследование, если периметр равен: 1) 16 см; 2) 32 см. Выскажите гипотезу.
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Предмет:
Математика -
Автор:
vanesa - 4 года назад
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Ответы 3
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4+4+4+4=16_площадь
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Автор:
travis75 - 4 года назад
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0
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периметр квадрата 4+4+4+4=16смплощадь его 16см*периметр прямоугольника 3+5+3+5 = 16смплощадь его 15см*периметр квадрата 8+8+8+8=32см его площадь 64см*периметр прямоугольника 10+6+10+6=32смего площадь 60см*
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Автор:
walton - 4 года назад
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0
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Сразу пишем гипотезу: Квадрат имеет наибольшую площадь при одном и том же периметр, как и у прямоугольника.ДАНО1) P = 16 = 2*(a+b)Исследование - a+b = 8, S= a*b=?a=0.5, b = 7.5, S= 3.75a=1,b=7, S = 7a=2, b=6, S = 12a=3, b=5, S = 15a=4, b = 4, S = 16 - квадрат.2. Периметр P = 2*(a+b)= 32Сторона квадрата a = P/4= 32:4 = 8Максимальная площадьS = a² = 8² = 64.
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Автор:
samarapratt - 4 года назад
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Test 7. Fill in the correct prepositions to, about, at, from, for, in, into, on, with .
1. I want to talk ___ the group ___ their exams.
2. All last winter he suffered ___ coughs and colds.
3. When will you write ___ Bill ___ your plans?
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6. The police are appealing ___ witnesses to come forward.
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10. The buses are often late, so you can’t depend ___ them.
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12. Keep enough money to pay ___ your ticket.
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14. I said ___ you I was thinking ___ going to America. I actually dreamt ___ it.
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16. The bus ran ___ the wall of a house.
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19. I saw somebody staring ___ me from the other side of the road.
20. He was always arguing ___ his brother.
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1. I bumped ___ an old friend of mine the other day.
2. I agree ___ you that we should wait a bit longer ___ her.
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18. Can I speak ___ Jane, please?
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20. Can you explain ___ me what you mean?
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Предмет:
Английский язык -
Автор:
foxy78 - 4 года назад
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