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polinacikalova914
@polinacikalova914
July 2022
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Площадь трапеции, изображённой на рисунке, равна 624, основание b=10, высота h=24. Найди второе основание трапеции.
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Verified answer
S = 1/2 • (a + b) • h = 1/2 • (a + 10) • 24 = 12 • (a + 10) = 12a + 120
12a + 120 = 624
12a = 624 - 120
12a = 504
a = 504 : 12
a = 42
Ответ: а = 42.
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Verified answer
S = 1/2 • (a + b) • h = 1/2 • (a + 10) • 24 = 12 • (a + 10) = 12a + 12012a + 120 = 624
12a = 624 - 120
12a = 504
a = 504 : 12
a = 42
Ответ: а = 42.