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размер платка, имеющего форму прямоугольника, раны 60 см и 30 см. уменьши размеры прямоугольника в 10 раз. Вычисли периметр и площадь первого и второго прямоугольников.
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Предмет:
Математика -
Автор:
brunovkcv - 6 лет назад
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Ответы 1
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Дано:
a1=60см, b1=30см. Уменьшить размеры в 10 раз, найти периметр и площадь двух прямоугольников.
Решение:
S1=60×30=1800см², P1=2×(60+30)=180см
a2=60/10=6, b2=30/3=3
P2=2×(6+3)=18см
S2=6×3=18см²
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Автор:
cutie - 6 лет назад
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