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ABCD-квадрат,BMC и CND- равносторонние треугольники. Найдите сумму периметров треугольников, если площадь квадрата 196 см
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Предмет:
Математика -
Автор:
macey4mvt - 6 лет назад
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Ответы 1
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Ответ:
Sabcd=a^2; с этого: a^2=196; a=14(см). Далее диагональ квадрата вычисляем по формуле d=a√2=14√2(см)
Pbmc=Pcnd=14√2+14+14=14√2+28(см)
Pbmc+Pcnd=2*(14√2+28)=28√2+56(см)
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Автор:
biggieortiz - 6 лет назад
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