Предмет: Геометрия, автор: stasjukjulija27

срочно, хто знає геометрію​

Приложения:

Ответы

Автор ответа: Аноним
1

Ответ:

18см²

Объяснение:

S=a*b*sin<(ab)

S=9*4*sin30°=36*1/2=18 см²

Автор ответа: ildar502020
1

Ответ:  18 см².

Объяснение:

ABCD - параллелограмм  ВЕ - высота. Угол А=30*

ВЕ=АВ* sin 30* = 4*1/2 = 2 см.

S=ah= 9*2=18 см ².

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