Найти площадь трапеции, если её основания a и b, высота h равны a = 5 см, b = 7 см, h = 3 см. - №29136991

Найти площадь трапеции, если её основания a и b, высота h равны a = 5 см, b = 7 см, h = 3 см.
- Предмет:
  Геометрия
- Автор:
  jerome
- 6 лет назад

Ответы 1

$S=\frac{a+b}{2}\cdot h= \frac{5+7}{2}\cdot 3=6\cdot 3=18$
- Автор:
  woofie
- 6 лет назад
- 0
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