Предмет: Математика, автор: kirss0817ss

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Ру: Найдите периметр прямоугольного треугольника, площадь которого равна 120см², длина гипотенузы - 26см.

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Ответы

Автор ответа: xxxeol

1

Пошаговое объяснение:

1) S = a *b = 2*120 = 240 - площадь прямоугольника.

2) a² + b² = c² = 26² = 676 - по теореме Пифагора.

Используем формулу - КВАДРАТ СУММЫ.

3) (a + b)² = a² + 2*ab + b² = 676 + 480 = 1156

a + b = √ 1156 = 34

4) P = a +b + c = 34 +26 = 60 - периметр - ответ

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